APA استشهاد

Barthwal, R. R. (2010). Industrial economics: :an introductory textbook. New age International.

استشهاد بنمط شيكاغو

Barthwal, R R. Industrial Economics: :an Introductory Textbook. New Delhi: New age International, 2010.

MLA استشهاد

Barthwal, R R. Industrial Economics: :an Introductory Textbook. New age International, 2010.