Παραπομπή σε μορφή APA (7η εκδ.)

Hartog, J., & Theeuwes, J. (1993). Labour market contracts and institutions: A cross - national comparison. North-Holland.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hartog, Joop, και Jules Theeuwes. Labour Market Contracts and Institutions: A Cross - National Comparison. Amsterdam, London: North-Holland, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hartog, Joop, και Jules Theeuwes. Labour Market Contracts and Institutions: A Cross - National Comparison. North-Holland, 1993.