APA استشهاد

Barthwal, R. (2002). Industrial economics: An introductory textbook (2nd ed.). New Age.

استشهاد بنمط شيكاغو

Barthwal, R.R. Industrial Economics: An Introductory Textbook. 2nd ed. New Delhi: New Age, 2002.

MLA استشهاد

Barthwal, R.R. Industrial Economics: An Introductory Textbook. 2nd ed. New Age, 2002.