APA (7th ed.) Citation

Hillman, W. S. (1979). Photoperiodism in plants and animals. Scientific Publications Division, Carolina Biological Supply Co..

Chicago Style (17th ed.) Citation

Hillman, William S. Photoperiodism in Plants and Animals. Burlington, N.C.: Scientific Publications Division, Carolina Biological Supply Co., 1979.

MLA (9th ed.) Citation

Hillman, William S. Photoperiodism in Plants and Animals. Scientific Publications Division, Carolina Biological Supply Co., 1979.