LINK, M. (1981). Outdoor education: A manual for teaching in nature's classroom. Prentice-Hall.
Chicago-referens (17:e uppl.)LINK, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. New Jersey: Prentice-Hall, 1981.
MLA-referens (9:e uppl.)LINK, Michael. Outdoor Education: A Manual for Teaching in Nature's Classroom. Prentice-Hall, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.