Παραπομπή σε μορφή APA (7η εκδ.)

Salzman, J. (1991). Environmental labelling in OECD countries. Organisation for Economic Co-operation and Development.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Salzman, James. Environmental Labelling in OECD Countries. Paris: Organisation for Economic Co-operation and Development, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Salzman, James. Environmental Labelling in OECD Countries. Organisation for Economic Co-operation and Development, 1991.