American Express Travel Related Services Company. (1994). Sourcebook on the travel and tourism industry in the APEC region. American Express.
Lua i Stíl Chicago (17ú heag.)American Express Travel Related Services Company. Sourcebook on the Travel and Tourism Industry in the APEC Region. [Jakarta?]: American Express, 1994.
Lua MLA (8ú heag.)American Express Travel Related Services Company. Sourcebook on the Travel and Tourism Industry in the APEC Region. American Express, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.