Luna, T. W. (1976). Environmental education and geography. University of the Philippines Press.
Chicago-referens (17:e uppl.)Luna, Telesforo W. Environmental Education and Geography. Quezon City: University of the Philippines Press, 1976.
MLA-referens (9:e uppl.)Luna, Telesforo W. Environmental Education and Geography. University of the Philippines Press, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.