APA Zitierstil

Chappell, D. (2008). Understanding.net (2nd.). Pearson education.

Chicago Zitierstil

Chappell, David. Understanding.net. 2nd. New Jersey: Pearson education, 2008.

MLA Zitierstil

Chappell, David. Understanding.net. 2nd. Pearson education, 2008.