Link, M. (1981). Outdoor education: A manual for teaching in nature's classroom. Prentice-Hall.
Cita Chicago (17th ed.)Link, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. Englewood Cliffs, N.J: Prentice-Hall, 1981.
Cita MLA (9th ed.)Link, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. Prentice-Hall, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.