Knowledge, S. f. t. E. o. L. (1920). One Mystery Less. New York.
Chicago Style (17th ed.) CitationKnowledge, Society for the Extension of Liberal. One Mystery Less. New York, 1920.
Cita MLAKnowledge, Society for the Extension of Liberal. One Mystery Less. New York, 1920.
Atenció: Aquestes cites poden no estar 100% correctes.