APA (7th ed.) Citation

Hillson C. J., Kovar, A. J., & Westerfeld, W. F. (1961). Introductory botany: A laboratory manual. Harper.

Chicago Style (17th ed.) Citation

Hillson C. J., A. J. Kovar, and W. F. Westerfeld. Introductory Botany: A Laboratory Manual. New York: Harper, 1961.

MLA (9th ed.) Citation

Hillson C. J., et al. Introductory Botany: A Laboratory Manual. Harper, 1961.