AUTHOR
World Tourism Organization
110
Philippines
60
National Geographic Society (U.S.)
59
Time-Life Books
53
Kotler, Philip
30
Lopez, Emma Lina F.
27
De Leon, Hector S.
25
Hoefer, Hans Johannes
24
Cruz, Reil G.
22
Philippines. National Economic and Development Authority
22
National Research Council (U.S.). Transportation Research Board
21
International Air Transport Association
20
Discovery Channel (Firm)
19
Lundberg, Donald E.
18
Nolledo, Jose N.
18
United Nations. Economic and Social Commission for Asia and the Pacific
18
Philippines. Department of Tourism
17
Ser-Vo-Tel Institute
16
Hall, Colin Michael 1961-
15
Hoefer, Hans
15
Bell, Brian
14
Powers, Thomas F.
14
Badilla, Maria Criselda G.
13
Harvard Business Review
13
Ninemeier, Jack D.
13
Pacific Area Travel Association
13
Barrows, Clayton W.
12
International Union of Official Travel Organizations
12
Philippines. National Census and Statistics Office
12
United States Travel Data Center
12
Walker, John R. 1944-
12
Kotas, Richard
11
Muro, Vicente
11
Pearce, Douglas G. 1949-
11
Buccat, Monina M.
10
Goeldner, Charles R.
10
Hayes, David K.
10
Page, Stephen J.
10
Swarbrooke, John
10
Tribe, John
10
Unesco
10
Alampay, Ramon Benedicto A.
9
Archaeological Survey of India
9
Chang, Richard Y.
9
Davidoff, Philip G.
9
Domingo, Benjamin B.
9
Foster, Dennis L.
9
Medlik, S.
9
Meigs, Robert F.
9
Miller, Jack E. 1930-
9
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