Παραπομπή σε μορφή APA (7η εκδ.)

Pepping, G., & De Bruijn, M. (1991). Tourism: emphasis on selective development: An evaluation of tourist types on a regional level with a case study for the Greek island of Alonnisos. Free University of Amsterdam.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Pepping, Gerard, και Michiel De Bruijn. Tourism: Emphasis on Selective Development: An Evaluation of Tourist Types on a Regional Level with a Case Study for the Greek Island of Alonnisos. Amsterdam: Free University of Amsterdam, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Pepping, Gerard, και Michiel De Bruijn. Tourism: Emphasis on Selective Development: An Evaluation of Tourist Types on a Regional Level with a Case Study for the Greek Island of Alonnisos. Free University of Amsterdam, 1991.