APA (7th ed.) Citation

Varley, M. E. (1967). British freshwater fishes: Factors affecting their distribution. Fishing News Books.

Chicago Style (17th ed.) Citation

Varley, Margaret E. British Freshwater Fishes: Factors Affecting Their Distribution. Londres: Fishing News Books, 1967.

MLA (9th ed.) Citation

Varley, Margaret E. British Freshwater Fishes: Factors Affecting Their Distribution. Fishing News Books, 1967.

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