APA (7 वां संस्करण) प्रशस्ति पत्र

Link, M. (1981). Outdoor education: A manual for teaching in nature's classroom. Prentice-Hall.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Link, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. Englewood Cliffs, N.J: Prentice-Hall, 1981.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Link, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. Prentice-Hall, 1981.