APA (7th ed.) Citation

Comstock, A. B., & Gordon, E. L. (1939). Handbook of nature-study (24th ed.). Comstock publishing company, inc..

Chicago Style (17th ed.) Citation

Comstock, Anna Botsford, and Eva Lucretia Gordon. Handbook of Nature-study. 24th ed. Ithaca, N.Y.: Comstock publishing company, inc., 1939.

MLA (9th ed.) Citation

Comstock, Anna Botsford, and Eva Lucretia Gordon. Handbook of Nature-study. 24th ed. Comstock publishing company, inc., 1939.