Cita APA (7a ed.)

Marden, O. S. (1909). Not the salary but the opportunity. Crowell Co..

Cita Chicago Style (17a ed.)

Marden, Orison Swett. Not the Salary but the Opportunity. New York: Crowell Co., 1909.

Cita MLA (9a ed.)

Marden, Orison Swett. Not the Salary but the Opportunity. Crowell Co., 1909.