1974
Buku Teks
Nowak, Ronald M.
The Johns Hopkins University Press, 1983
Buku Referensi
Steinberg, David J. (David Joel), author
Solidaridad Publishing House, 1967
Buku Teks
Nolledo, Jose N.
National Book Store, 1967
Buku Teks
Nolledo, Jose N.
National Book Store, 1967
Buku Teks