APA (7th ed.) Citation

Hegner, R. W., & Engemann, J. G. (1968). Invertebrate zoology / [by] R.W. Hegner and J.G. Engemann (2nd ed.). Macmillan.

Chicago Style (17th ed.) Citation

Hegner, R. W., and J. G. Engemann. Invertebrate Zoology / [by] R.W. Hegner and J.G. Engemann. 2nd ed. Macmillan, 1968.

MLA (9th ed.) Citation

Hegner, R. W., and J. G. Engemann. Invertebrate Zoology / [by] R.W. Hegner and J.G. Engemann. 2nd ed. Macmillan, 1968.

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