Elkins, Richard E., author
University of Hawaii Press, 1968,
Buku Referensi
Wolfenden, Elmer
Institute of National Language, 1961
Buku Teks
Teresita V. Ramos
Southeast Asia Studies center for Asian and Pacific Studies, 1985
Buku Teks
Manuel, A. Arsenio
Manila: Filipiniana Publications, 1948
Buku Teks
Dita Putri Prameswari, author
Universitas Indonesia, 2011
UI - Tesis (Open)