APA-Zitierstil (7. Ausg.)

Pennak, R. W. (1978). Fresh-water invertebrates of the United States (2d ed.). Wiley.

Chicago-Zitierstil (17. Ausg.)

Pennak, Robert W. Fresh-water Invertebrates of the United States. 2d ed. New York: Wiley, 1978.

MLA-Zitierstil (9. Ausg.)

Pennak, Robert W. Fresh-water Invertebrates of the United States. 2d ed. Wiley, 1978.