APA (7th ed.) Citation

Comstock, J. H., & Comstock, A. B. (1895). A manual for the study of insects. Comstock Pub. Co..

Chicago Style (17th ed.) Citation

Comstock, John Henry, and Anna Botsford Comstock. A Manual for the Study of Insects. Ithaca, N. Y.: Comstock Pub. Co., 1895.

MLA (9th ed.) Citation

Comstock, John Henry, and Anna Botsford Comstock. A Manual for the Study of Insects. Comstock Pub. Co., 1895.