APA (7th ed.) Citation

Gessner G. Hawley. (1957). The encyclopedia of chemistry. Reinhold Publishing.

Chicago Style (17th ed.) Citation

Gessner G. Hawley. The Encyclopedia of Chemistry. New York: Reinhold Publishing, 1957.

MLA (9th ed.) Citation

Gessner G. Hawley. The Encyclopedia of Chemistry. Reinhold Publishing, 1957.

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