APA (7th ed.) Citation

Kostyal, K. M. (1988). Animals at play. National Geographic Society.

Chicago Style (17th ed.) Citation

Kostyal, K. M. Animals at Play. [Washington, D.C.]: National Geographic Society, 1988.

MLA (9th ed.) Citation

Kostyal, K. M. Animals at Play. National Geographic Society, 1988.

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