Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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