APA-čujuhus (7. p.)
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.
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