APA (7th ed.) Citation

Sampson, W. (1946). A generic classification of California aphids by means of first instar nymphs. University of California press.

Chicago Style (17th ed.) Citation

Sampson, Wilson. A Generic Classification of California Aphids by Means of First Instar Nymphs. Berkeley: University of California press, 1946.

MLA (9th ed.) Citation

Sampson, Wilson. A Generic Classification of California Aphids by Means of First Instar Nymphs. University of California press, 1946.