APA aipamena

Marden, O. S. (1913). Training for efficiency. Thomas Y. Crowell company.

Chicago Style aipamena

Marden, Orison Swett. Training for Efficiency. New York: Thomas Y. Crowell company, 1913.

MLA aipamena

Marden, Orison Swett. Training for Efficiency. Thomas Y. Crowell company, 1913.