Semer-Purzycki, J. (2001). A practical guide to fares and ticketing (3rd ed.). Delmar Thomson Learning.
Chicago Style (17. basım) AtıfSemer-Purzycki, Jeanne. A Practical Guide to Fares and Ticketing. 3rd ed. Albany: Delmar Thomson Learning, 2001.
MLA (9th ed.) AtıfSemer-Purzycki, Jeanne. A Practical Guide to Fares and Ticketing. 3rd ed. Delmar Thomson Learning, 2001.
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