APA (7th ed.) Citation

Willoughby, L. G. (1976). Freshwater biology / by L.G. Willoughby. Hutchinson.

Chicago Style (17th ed.) Citation

Willoughby, L. G. Freshwater Biology / by L.G. Willoughby. Hutchinson, 1976.

MLA (9th ed.) Citation

Willoughby, L. G. Freshwater Biology / by L.G. Willoughby. Hutchinson, 1976.

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