Brown, Joe David
Time Incorporated, 1961
Buku Teks
Ministry of Information, 1950
Buku Teks
Hobbs, Lisa
McGraw-Hill, 1967
Buku Teks
The Publications Division Ministry of Information & Broadcasting Goverment of India , 1953
Buku Teks
Thomas, F. W.
University of Calcuta, 1942
Buku Teks