APA-viite (7. p.)

Foster, D. L. (1991). Sales and marketing for the travel professional. Glencoe.

Chicago-viite (17. p.)

Foster, Dennis L. Sales and Marketing for the Travel Professional. Lake Forest, Ill: Glencoe, 1991.

MLA-viite (9. p.)

Foster, Dennis L. Sales and Marketing for the Travel Professional. Glencoe, 1991.