Atwal A S, B. S. (1990). Pest population and assessment of crop losses. Indian Council of Agricultural Research.
استشهاد بنمط شيكاغوAtwal A S, Balraj Singh. Pest Population and Assessment of Crop Losses. New Delhi: Indian Council of Agricultural Research, 1990.
MLA استشهادAtwal A S, Balraj Singh. Pest Population and Assessment of Crop Losses. Indian Council of Agricultural Research, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.