Παραπομπή σε μορφή APA (7η εκδ.)

Pavcnik, N. (2000). What explains skill upgrading in less developed countries? National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Pavcnik, Nina. What Explains Skill Upgrading in Less Developed Countries? Cambridge: National Bureau of Economic Research, 2000.

Παραπομπή σε μορφή MLA (9th εκδ.)

Pavcnik, Nina. What Explains Skill Upgrading in Less Developed Countries? National Bureau of Economic Research, 2000.