APA (7th ed.) Citation

Knudsen, J. W. (1966). Biological techniques; collecting, preserving, and illustrating plants and animals. Harper and Row.

Chicago Style (17th ed.) Citation

Knudsen, Jens W. Biological Techniques; Collecting, Preserving, and Illustrating Plants and Animals. New York: Harper and Row, 1966.

MLA (9th ed.) Citation

Knudsen, Jens W. Biological Techniques; Collecting, Preserving, and Illustrating Plants and Animals. Harper and Row, 1966.