American Hotel & Motel Association Educational Institute. (1990). PC applications for the hospitality industry: Tutorials for Lotus 1-2-3, dBase III, WordPerfect. Educational Institute, AHMA.
Citazione stile Chigago Style (17a edizione)American Hotel & Motel Association Educational Institute. PC Applications for the Hospitality Industry: Tutorials for Lotus 1-2-3, DBase III, WordPerfect. East Lansing, Mich: Educational Institute, AHMA, 1990.
Citatione MLA (9a ed.)American Hotel & Motel Association Educational Institute. PC Applications for the Hospitality Industry: Tutorials for Lotus 1-2-3, DBase III, WordPerfect. Educational Institute, AHMA, 1990.
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