Manalang, Priscila S.
University of the Philippines Press, 1977
Buku Teks
Stewart, Kilton
W.W. Norton & Company, 1954
Buku Teks
Mulder, Niels, author
Gramedia Pustaka Utama, 1997
Buku Teks
Tan, Giok-Lan, author
Cornell University, 1963
Buku Teks
Tugby, Donald John
University of Queensland Press , 1977
Buku Teks