Luna, T. W. (1976). Environmental education and geography. University of the Philippines Press.
Lua i Stíl Chicago (17ú heag.)Luna, Telesforo W. Environmental Education and Geography. Quezon City: University of the Philippines Press, 1976.
Lua MLA (9ú heag.)Luna, Telesforo W. Environmental Education and Geography. University of the Philippines Press, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.