Παραπομπή σε μορφή APA (7η εκδ.)

Clark, J. (1985). Study Guide to Accompany Gwartney, Stroup, and Clark's Essentials of Economics (Second Edition). ELSEVIER.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Clark, J.R. Study Guide to Accompany Gwartney, Stroup, and Clark's Essentials of Economics (Second Edition). ELSEVIER, 1985.

Παραπομπή σε μορφή MLA (8th εκδ.)

Clark, J.R. Study Guide to Accompany Gwartney, Stroup, and Clark's Essentials of Economics (Second Edition). ELSEVIER, 1985.