APA (7th ed.) Citation

(1972). Aquatic mammals. Dolfinarium Harderwijk.

Chicago Style (17th ed.) Citation

Aquatic Mammals. Harderwijk, Netherlands: Dolfinarium Harderwijk, 1972.

MLA (9th ed.) Citation

Aquatic Mammals. Dolfinarium Harderwijk, 1972.

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