APA (7th ed.) Citation

Schwartz, J. H., & Swanson, H. D. (1976). A Union List of Books on Toxicology.

Chicago Style (17th ed.) Citation

Schwartz, James H., and Helen D. Swanson. A Union List of Books on Toxicology. 1976.

MLA (9th ed.) Citation

Schwartz, James H., and Helen D. Swanson. A Union List of Books on Toxicology. 1976.

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