Irwin, R. (1983). Timeshare properties: What every buyer must know! New York : McGraw-Hill.
Chicago-viite (17. p.)Irwin, Robert. Timeshare Properties: What Every Buyer Must Know! New York : McGraw-Hill, 1983.
MLA-viite (9. p.)Irwin, Robert. Timeshare Properties: What Every Buyer Must Know! New York : McGraw-Hill, 1983.
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