APA Edition Citation

Pennak, R. W. (1953). Fresh-water invertebrates of the United States. Ronald Press Co.

Chicago Edition Citation

Pennak, Robert W. Fresh-water Invertebrates of the United States. New York: Ronald Press Co, 1953.

MLA Edition Citation

Pennak, Robert W. Fresh-water Invertebrates of the United States. Ronald Press Co, 1953.

Warning: These citations may not always be 100% accurate.