See Allo

Longman, 1999

Buku Teks

Nature tourism : managing for the environment

edited by Tensie Whelan; foreword by Peter A. A. Berle

New York : Uslan Press, 1991,

Buku Referensi

Cases in Singapore hospitality and tourism management

edited by Hooi Den Huan

Prentice-Hall, 1999

Buku Teks

Mathieson, Alister

Tourism : economic, physical and social impacts

Longman, 1995

Buku Teks

Foster, Douglas

Travel and tourism management / Douglas Foster

Macmillan, 1985

Buku Teks