APA (7th ed.) Citation

Niles, M. C. (1958). The essence of management (1st American ed.). Harper.

Chicago Style (17th ed.) Citation

Niles, Mary Cushing. The Essence of Management. 1st American ed. New York: Harper, 1958.

MLA (9th ed.) Citation

Niles, Mary Cushing. The Essence of Management. 1st American ed. Harper, 1958.