Παραπομπή σε μορφή APA (7η εκδ.)

Foster, D. L. (1998). The business of travelagency operations and administration. Glencoe/McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Foster, Dennis L. The Business of Travelagency Operations and Administration. Glencoe/McGraw-Hill, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Foster, Dennis L. The Business of Travelagency Operations and Administration. Glencoe/McGraw-Hill, 1998.