APA

Niles M. C. (., . (1958). The essence of management. New York: Harper.

Chicago

Niles Mary Cushing (Howard), . 1958. The essence of management. New York: Harper.

Harvard

Niles M. C. (., . (1958). The essence of management. New York: Harper.

MLA

Niles Mary Cushing (Howard), . The essence of management. New York: Harper. 1958.