APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Sampson, Wilson. A Generic Classification of California Aphids by Means of First Instar Nymphs. Berkeley [u.a.]: Univ. of California Press, 1946.

MLA (9th ed.) Citation

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