APA (7th ed.) Citation

Willett, W. (1948). British birds. A. and C. Black.

Chicago Style (17th ed.) Citation

Willett, Wilfred. British Birds. London: A. and C. Black, 1948.

MLA (9th ed.) Citation

Willett, Wilfred. British Birds. A. and C. Black, 1948.

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