Παραπομπή σε μορφή APA (7η εκδ.)

Kettner, A. (2007). Estimation of vacancies by NACE and ISCO at disaggregated regional level. IAB.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kettner, Anja. Estimation of Vacancies by NACE and ISCO at Disaggregated Regional Level. Nurnberg: IAB, 2007.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kettner, Anja. Estimation of Vacancies by NACE and ISCO at Disaggregated Regional Level. IAB, 2007.