Majul, Cesar A., author
The University of The Philippines Press, 1973
Buku Teks
Majul, Cesar A., author
University of the Philippines Press, 1999
Buku Teks
Abaya, Hernando J., author
Malaya BOoks, 1970
Buku Teks
Harris, D.D. (Donald Dunstan)
Whitcombe Tombs PTY, 1963
Buku Teks
Wheeler, Walter J.
McGraw-Hill, 1940
Buku Teks