Cita APA (7th ed.)
Klaasen, R. (1979). How green is my mountain. Inter Vasity Press.
Cita Chicago (17th ed.)
Klaasen, Ruth. How Green Is My Mountain. Illinois: Inter Vasity Press, 1979.
Cita MLA (9th ed.)
Klaasen, Ruth. How Green Is My Mountain. Inter Vasity Press, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.