Gaya APA

Parkin, G, F. et al (1994). Chemistry for environmental engineering / Clair N. Sawyer, Perry L. McCarty, Gene F. Parkin (Ed.ke-4). New York: McGraw-Hill.

Gaya MLA

Parkin, Gene, F.. et al. "Chemistry for environmental engineering / Clair N. Sawyer, Perry L. McCarty, Gene F. Parkin". Ed.ke-4 New York: McGraw-Hill, 1994. Textbook.