Campbell, P. (1949). The consumer interest: A study in consumer economics. Harper & Brothers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCampbell, Persia. The Consumer Interest: A Study in Consumer Economics. New York, NY: Harper & Brothers, 1949.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCampbell, Persia. The Consumer Interest: A Study in Consumer Economics. Harper & Brothers, 1949.
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