International Studygroup on Multiple Use of Land, Lier, H. N. v., & Taylor, P. D. (1993). New challenges in recreation and tourism planning. Elsevier.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Studygroup on Multiple Use of Land, H. N. van Lier, और Pat D. Taylor. New Challenges in Recreation and Tourism Planning. Amsterdam, New York: Elsevier, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Studygroup on Multiple Use of Land, et al. New Challenges in Recreation and Tourism Planning. Elsevier, 1993.
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