APA (7th ed.) Citation

Helfferich, K. T., & Gregory, T. E. (1927). Money. Adelphi.

Chicago Style (17th ed.) Citation

Helfferich, Karl Theodor, and T. E. Gregory. Money. New York: Adelphi, 1927.

MLA (9th ed.) Citation

Helfferich, Karl Theodor, and T. E. Gregory. Money. Adelphi, 1927.

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