APA (7th ed.) Citation

Stevenson Robert L. & Stevenson, R. L. (2008). Four complete novels. Gramercy Books.

Chicago Style (17th ed.) Citation

Stevenson Robert L. and Robert Louis Stevenson. Four Complete Novels. New York: Gramercy Books, 2008.

MLA (8th ed.) Citation

Stevenson Robert L. and Robert Louis Stevenson. Four Complete Novels. Gramercy Books, 2008.

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