APA (7th ed.) Citation

Boulenger, E. G. The underwater world. Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Boulenger, E. G. The Underwater World. London: Hodder and Stoughton.

MLA (9th ed.) Citation

Boulenger, E. G. The Underwater World. Hodder and Stoughton.

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