New horizons world guide
edited by Gerald W. Whitted
Pan American World Airways, 1971
 Buku Referensi
New horizons world guide : Pan American's Travel Facts about 108 countries
edited by Gerald W. Whitted
Pan American Airways, 1963
 Buku Teks SO
New horizons world guide : Pan Am's Travel Facts about 138 countries
edited by Gerald W. Whitted
Pan American World Airways, 1971
 Buku Teks SO
Barnes, Harry Elmer
New horizons in criminology
Prentice-Hall of India, 1966
 Buku Teks
New Horizons in Linguistics
edited by John Lyons
Penguin Books, 1973
 Buku Teks SO