Citazione Stile APA (7a Edizione)

Comstock, A. B. (1941). Handbook of nature-study QH53 .C7. Comstock Publishing.

Citazione stile Chigago Style (17a edizione)

Comstock, Anna Botsford. Handbook of Nature-study QH53 .C7. Ithaca, New York: Comstock Publishing, 1941.

Citatione MLA (9a ed.)

Comstock, Anna Botsford. Handbook of Nature-study QH53 .C7. Comstock Publishing, 1941.