R R BARTHWAL. (2022). Industrial economics: An introductory textbook (4.). NEW AGE INTERNATIONAL PUBLISHERS.
Παραπομπή σε μορφή Chicago (17η εκδ.)R R BARTHWAL. Industrial Economics: An Introductory Textbook. 4. New Delhi: NEW AGE INTERNATIONAL PUBLISHERS, 2022.
Παραπομπή σε μορφή MLA (9th εκδ.)R R BARTHWAL. Industrial Economics: An Introductory Textbook. 4. NEW AGE INTERNATIONAL PUBLISHERS, 2022.