APA (7th ed.) Citation

Hegner, R. W., & Engemann, J. G. (1981). Invertebrate zoology. Macmillan Publ.

Chicago Style (17th ed.) Citation

Hegner, Robert W., and Joseph G. Engemann. Invertebrate Zoology. Macmillan Publ, 1981.

MLA (8th ed.) Citation

Hegner, Robert W., and Joseph G. Engemann. Invertebrate Zoology. Macmillan Publ, 1981.

Warning: These citations may not always be 100% accurate.