APA (7th ed.) Citation

Laubach, F. C. (1929). Seven thousand emeralds. Friendship Press.

Chicago Style (17th ed.) Citation

Laubach, Frank Charles. Seven Thousand Emeralds. New York: Friendship Press, 1929.

MLA (9th ed.) Citation

Laubach, Frank Charles. Seven Thousand Emeralds. Friendship Press, 1929.