Παραπομπή APA

Maurus, J. (1976). How to win personal efficiency. St. paul Society.

Παραπομπή Chicago Style

Maurus, J. How to Win Personal Efficiency. Allahabad: St. paul Society, 1976.

Παραπομπή MLA

Maurus, J. How to Win Personal Efficiency. St. paul Society, 1976.