APA (7th ed.) Citation

Hamsun, K., & Worster, W. J. A. (1921). Growth of the soil. The Modern Library.

Chicago Style (17th ed.) Citation

Hamsun, Knut, and W. J. Alexander Worster. Growth of the Soil. New York: The Modern Library, 1921.

MLA (9th ed.) Citation

Hamsun, Knut, and W. J. Alexander Worster. Growth of the Soil. The Modern Library, 1921.