gopal, B., & Tiagi, B. (1978). Teaching of ecology of environmental sciences in India. International scientific publications.
استشهاد بنمط شيكاغوgopal, B., و B. Tiagi. Teaching of Ecology of Environmental Sciences in India. Jaipur: International scientific publications, 1978.
MLA استشهادgopal, B., و B. Tiagi. Teaching of Ecology of Environmental Sciences in India. International scientific publications, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.