Philippines : De La Salle Univesrsity-Manila, 2005,
Majalah, Jurnal, Buletin
Bonner, Thomas Neville, author
Prentice-Hall, 1960
Buku Teks
Yayasan Obor Indonesia,
Majalah, Jurnal, Buletin
Unesco , 1952
Buku Teks
by George C. Atteberry ... [at al.]
Macmillan, 1950
Buku Teks