Παραπομπή APA

Perry, S. (1976). How to Enrich Your Life. St. Paul Society.

Παραπομπή Chicago Style

Perry, S. How to Enrich Your Life. Allahabad: St. Paul Society, 1976.

Παραπομπή MLA

Perry, S. How to Enrich Your Life. St. Paul Society, 1976.