APA (7th ed.) Citation

Corbett, S., & Kühl, J. (1974). What about the Wankel engine? Four Winds Press.

Chicago Style (17th ed.) Citation

Corbett, Scott, and Jerome Kühl. What About the Wankel Engine? New York: Four Winds Press, 1974.

MLA (9th ed.) Citation

Corbett, Scott, and Jerome Kühl. What About the Wankel Engine? Four Winds Press, 1974.