Παραπομπή σε μορφή APA (7η εκδ.)

Rumble, G., & Oliveira, J. (1992). Vocational education at a distance: International perspectives. Kogan Page in association with the International Labour Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rumble, Greville, και Joa̧o Oliveira. Vocational Education at a Distance: International Perspectives. London: Kogan Page in association with the International Labour Office, 1992.

Παραπομπή σε μορφή MLA (8th εκδ.)

Rumble, Greville, και Joa̧o Oliveira. Vocational Education at a Distance: International Perspectives. Kogan Page in association with the International Labour Office, 1992.