One way to demonstrate academic integrity is to

One way to demonstrate academic integrity is to give credence and acknowledgement to the sources of your information.

For example:
You wrote a definition of a term. And you found that definition in a book authored by somebody. On you paper, you either write "According to the novel written by author, TERM is defined as..."

For example:
You are tasked to define the word "plagiarism".

To demonstrate academic integrity, you define plagiarism like this:

According to wikipedia, Plagiarism is the "wrongful appropriation" and "stealing and publication" of another author's "language, thoughts, ideas, or expressions" and the representation of them as one's own original work.

Note that you have stated your source.
You can then add your own input and thought about the word. Like this:

I believe that plagiarism is an act of a lazy person. A person who pretends to be smart but in reality is just a parasite.