This information appears on page 15 of the source. Which citation format is correct?

(Price et al. 15)
I am posting for others... feel free to take the points.
The estimated ARMS effect indicates a 17-percent increase in yields for herbicide-tolerant cotton adopters nationwide. In some regions, herbicide-tolerant cotton yields may have been lower than for conventional varieties. In particular, farmers in the Mississippi Portal encountered serious and unexpected problems with their herbicide-tolerant cotton during the 1997 growing season (Virginia Cooperative Extension). Some growers found deformed bolls and bolls that dropped off the plants. About 20 percent of the region’s herbicide-tolerant cotton was affected. However, the problems may have been caused by factors other than the herbicide-tolerant technology itself, such as soil type and weather conditions.

—Gregory Price, William Lin, José Falck-Zepeda, and Jorge Fernandez-Cornejo. “Size and Distribution of Market Benefits From Adopting Biotech Crops.” United States Department of Agriculture. November 2003.

just took the test;

argument: "it's time to wage a war against britain to secure american freedom."

claims: "america has tried every peaceful method available for seperating from england" & "the americans' petitions to the king have been turned away by him."

b is the answer

laughter improves people's emotional and well-being.   kavita khajuria is a psychiatrist and he has defined laughter as " physical expression of humour and joy that has numorous protective qualities." when you feel under stress or sad because you have argued with a person you love, you need to laugh to feel strong enough to face the problems.

when you have an exam , you probably feel under stress. laughing will you release this tension. humour decreases the hormones that cause stress. k. khajuria   says that the brain releases some chemical components when we laugh. these chemical components are called neurotrophic factors and they are very important. they support the neurons in the brain and encourage the growth of new neurons. as a conclusion, you should laugh a lot before giving your exam. laughing will you with your exam and with your brain.

if you are having difficult times with friends or family members, laughing will also you face these problems. alannagh kelly is an assistant psychologist. she thinks that laughter can   make anger and anxiety vanish in the air. laughter can set a new and exciting atmosphere among people and it can make the bonds bewteen people stronger. so, if you are having a difficult time with someone you love, invite him / her to watch a comedy. you will probably make peace.

laugher will certainly protect you against stress and emotional pain. watching a comedy   may be a solution to stress or damaged bonds. " this remedy is fun , free, and best of all, no instructions needed."   alannagh kelly has said in her blog.