Παραπομπή APA

George, D. (2007). Ecological spirituality: Cross cultural perspective. Serials pub.

Παραπομπή Chicago Style

George, Davis. Ecological Spirituality: Cross Cultural Perspective. New Delhi: Serials pub, 2007.

Παραπομπή MLA

George, Davis. Ecological Spirituality: Cross Cultural Perspective. Serials pub, 2007.