Franklin

MLA

Spencer, Herbert. Biology of the Parasites and Hyperparasites of Aphids. [Columbus, O.], 1926.

APA

Spencer, H. (1926). Biology of the parasites and hyperparasites of aphids. [Columbus, O.].

Chicago

Spencer, Herbert, Biology of the Parasites and Hyperparasites of Aphids. [Columbus, O.], 1926.