APA (7 वां संस्करण) प्रशस्ति पत्र
(1980). Recreation and leisure: Issues in an era of change. Venture Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Recreation and Leisure: Issues in an Era of Change. Pennsylvania: Venture Publishing, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Recreation and Leisure: Issues in an Era of Change. Venture Publishing, 1980.
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