Sinha, P. R. R. (1972). Studies in extension education. National Institute of Community development.
استشهاد بنمط شيكاغوSinha, P R R. Studies in Extension Education. Hyderabad: National Institute of Community development, 1972.
MLA استشهادSinha, P R R. Studies in Extension Education. National Institute of Community development, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.