Παραπομπή σε μορφή APA (7η εκδ.)

American Express Travel Related Services Company. (1994). Sourcebook on the travel and tourism industry in the APEC region. American Express.

Παραπομπή σε μορφή Chicago (17η εκδ.)

American Express Travel Related Services Company. Sourcebook on the Travel and Tourism Industry in the APEC Region. [Jakarta?]: American Express, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

American Express Travel Related Services Company. Sourcebook on the Travel and Tourism Industry in the APEC Region. American Express, 1994.