APA (7th ed.) Citation

Wilhelms, D. (1989). A Smooth Spot in Tranquility.

Chicago Style (17th ed.) Citation

Wilhelms, Don. A Smooth Spot in Tranquility. 1989.

MLA (9th ed.) Citation

Wilhelms, Don. A Smooth Spot in Tranquility. 1989.

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