Comstock, A. B. (1941). Handbook of nature-study QH53 .C7. Comstock Publishing.
Cita Chicago Style (17a ed.)Comstock, Anna Botsford. Handbook of Nature-study QH53 .C7. Ithaca, New York: Comstock Publishing, 1941.
Cita MLA (9a ed.)Comstock, Anna Botsford. Handbook of Nature-study QH53 .C7. Comstock Publishing, 1941.
Precaución: Estas citas no son 100% exactas.