APA (7. basım) Alıntı

Averbook, A. S. (1968). International tourism and the international hotel industry. s.n.].

Chicago Style (17. basım) Atıf

Averbook, Arthur Stephan. International Tourism and the International Hotel Industry. [S.l: s.n.], 1968.

MLA (9th ed.) Atıf

Averbook, Arthur Stephan. International Tourism and the International Hotel Industry. s.n.], 1968.