APA (7th ed.) Citation

Zoological Society of London. (1960). The International zoo yearbook. Zoological Society of London.

Chicago Style (17th ed.) Citation

Zoological Society of London. The International Zoo Yearbook. London: Zoological Society of London, 1960.

MLA (9th ed.) Citation

Zoological Society of London. The International Zoo Yearbook. Zoological Society of London, 1960.

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