Llamzon, Teodore A., author
Martinus Nijhoff, 1969
Buku Teks
edited by Alfred W. McCoy and Ed. C. de Jesus
Ateneo De Manila, 1982
Buku Teks
Ramos, Maximo D.
University of the Philippines Press, 1971
Buku Teks
Jocano, F. Landa, author
Philippine Center for Advanced Studies, 1975
Buku Teks
Kunio, Yoshihara, author
Ateneo de Manila University Press , 1985
Buku Teks