APA استشهاد

N.G.Das. (2009). Statistical methods. Tata McGraw Hill Education.

استشهاد بنمط شيكاغو

N.G.Das. Statistical Methods. New Delhi: Tata McGraw Hill Education, 2009.

MLA استشهاد

N.G.Das. Statistical Methods. Tata McGraw Hill Education, 2009.