Gaya APA
Davidoff, Philip G. ; Doris S. Davidoff. (1992).
Air Fares and Ticketing: Second Edition .
United States ::
Prentice Hall,.
Gaya Chicago
Davidoff, Philip G. ; Doris S. Davidoff.
Air Fares and Ticketing: Second Edition.
United States ::
Prentice Hall,,
1992.
Text.
Gaya MLA
Davidoff, Philip G. ; Doris S. Davidoff.
Air Fares and Ticketing: Second Edition.
United States ::
Prentice Hall,,
1992.
Text.
Gaya Turabian
Davidoff, Philip G. ; Doris S. Davidoff.
Air Fares and Ticketing: Second Edition.
United States ::
Prentice Hall,,
1992.
Print.