APA aipamena

Hegner, R. W., & Engemann, J. G. (1968). Invertebrate zoology (2d ed.). Macmillan.

Chicago Style aipamena

Hegner, Robert William, and Joseph G. Engemann. Invertebrate Zoology. 2d ed. New York: Macmillan, 1968.

MLA aipamena

Hegner, Robert William, and Joseph G. Engemann. Invertebrate Zoology. 2d ed. Macmillan, 1968.