Otiende, J. E. (1991). An introduction to environmental education. Nairobi Univ Press.
Chicago-čujuhus (17. p.)Otiende, James E. An Introduction to Environmental Education. Nairobi: Nairobi Univ Press, 1991.
MLA-čujuhus (9. p.)Otiende, James E. An Introduction to Environmental Education. Nairobi Univ Press, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.