McKaughan, Howard P., author
Institute of National Language, 1958
Buku Teks
compiled by Howard P. McKaughan, Batua A. Macaraya
University of Hawaii Press, 1967
Buku Referensi
Ward, Robert
Philippines Summer Institute of Linguistic Translator Philippines Publishers 1968
Buku Teks
Latman, R.G., author
Longman, Green, 1978
Buku Teks
Buku Teks