References
- Donaldson , G. E. and Donaldson , L. E. 1958 . “Outdoor Education: A Definition.” . Journal of Health, Physical Education and Recreation , 29 ( 17 ) : 63
- Ford , P. M. 1981 . Principles and Practices of Outdoor/Environmental Education , New York, NY : Wiley .
- Hammerman , D. R. , Hammerman , W. M. and Hammerman , E. L. 1985 . Teaching in the Outdoors , 3rd ed. , Danville, IL : Interstate .
- Kirk , J. Outdoor Education: Its Origin and Purpose . Principal address delivered at the Conference on Outdoor Education . March . Toronto, Ontario, , Canada
- Lewis , C. A. 1975 . The Administration of Outdoor Education Programs , Dubuque, IA : Kendall-Hunt .
- Mand , C. L. 1967 . Outdoor Education , New York, NY : Pratt .
- Sharp , L. B. 1943 . “Outside the Classroom.” . The Educational Forum , 7 ( 4 ) : 363
- Smith , J. W. 1955 . Outdoor Education and Youth , Washington, DC : A.A.H.P.E.R. .