APA

Otiende J., Ezaza W. & Boisvert R. (2010). An introduction to environmental education. Nairobi: University of Nairobi Press.

Chicago

Otiende J.E, Ezaza W.P and Boisvert R. 2010. An introduction to environmental education. Nairobi: University of Nairobi Press.

Harvard

Otiende J., Ezaza W. and Boisvert R. (2010). An introduction to environmental education. Nairobi: University of Nairobi Press.

MLA

Otiende J.E, Ezaza W.P and Boisvert R. An introduction to environmental education. Nairobi: University of Nairobi Press. 2010.