Παραπομπή σε μορφή APA (7η εκδ.)

HELLRIEGEL DON. (2002). MANAGEMENT: COMPETENCY BASED APPROACH (9TH.). THOMSON SOUTH-WESTERN.

Παραπομπή σε μορφή Chicago (17η εκδ.)

HELLRIEGEL DON. MANAGEMENT: COMPETENCY BASED APPROACH. 9TH. AUSTRALIA: THOMSON SOUTH-WESTERN, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

HELLRIEGEL DON. MANAGEMENT: COMPETENCY BASED APPROACH. 9TH. THOMSON SOUTH-WESTERN, 2002.