Παραπομπή σε μορφή APA (7η εκδ.)

Leal Filho, W. (1997). Lifelong learning and environmental education. Peter Lang.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Leal Filho, Walter. Lifelong Learning and Environmental Education. Berlin: Peter Lang, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Leal Filho, Walter. Lifelong Learning and Environmental Education. Peter Lang, 1997.