R Kumar. (1987). Environmental pollution and Health Hazards in India. Ashish publishing house.
استشهاد بنمط شيكاغوR Kumar. Environmental Pollution and Health Hazards in India. Ashish publishing house, 1987.
MLA استشهادR Kumar. Environmental Pollution and Health Hazards in India. Ashish publishing house, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.