Grebanier, Bernard D.N.
Barron`s Educational Series, INC, 1958
Buku Teks SO
Jocano, F. Landa
Philippine Center for Advanced Studies, 1975
Buku Teks SO
edited by Martin Tucker
Ungar, 1987
Buku Referensi
edited by Martin Tucker
Continuum, 1989
Buku Referensi
edited by Peter Collins and David Blair
University of Queensland Press, 1989
Buku Teks SO