Bhatnagar,O P. (1981). Research methods and measurements in behavioural sciences. Agride Publishing Academy.
استشهاد بنمط شيكاغوBhatnagar,O P. Research Methods and Measurements in Behavioural Sciences. New Delhi: Agride Publishing Academy, 1981.
MLA استشهادBhatnagar,O P. Research Methods and Measurements in Behavioural Sciences. Agride Publishing Academy, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.