APA (7th ed.) Citation

Chester, J. (1996). World of the penguin. Sierra Club Books.

Chicago Style (17th ed.) Citation

Chester, Jonathan. World of the Penguin. San Francisco: Sierra Club Books, 1996.

MLA (8th ed.) Citation

Chester, Jonathan. World of the Penguin. Sierra Club Books, 1996.

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