Gaya APA

Pechenik, J, A. (1993). A Short guide to writing about biology / Jan A. Pachenik (Ed.ke-2). New York: Harper Collins College Publishers.

Gaya MLA

Pechenik, Jan, A.. "A Short guide to writing about biology / Jan A. Pachenik". Ed.ke-2 New York: Harper Collins College Publishers, 1993. Textbook.