Παραπομπή σε μορφή APA (7η εκδ.)

Johnson, E. A., & Mappin, M. (2005). Environmental education and advocacy: Changing perspectives of ecology and education. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Johnson, E. A., και Michael Mappin. Environmental Education and Advocacy: Changing Perspectives of Ecology and Education. Cambridge; : New York: Cambridge University Press, 2005.

Παραπομπή σε μορφή MLA (9th εκδ.)

Johnson, E. A., και Michael Mappin. Environmental Education and Advocacy: Changing Perspectives of Ecology and Education. Cambridge University Press, 2005.