Dubey, R. (1992). Human ecology and environmental education: Interdisciplinary approaches. Chungh Publications.
Chicago-referens (17:e uppl.)Dubey, R.M. Human Ecology and Environmental Education: Interdisciplinary Approaches. Allahabad: Chungh Publications, 1992.
MLA-referens (9:e uppl.)Dubey, R.M. Human Ecology and Environmental Education: Interdisciplinary Approaches. Chungh Publications, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.