compiled by Howard P. McKaughan, Batua A. Macaraya
University of Hawaii Press, 1967
Buku Referensi
Palmer, E.H., author
Routledge & Kegan Paul, 1956
Buku Referensi
Wehr, Hans, 1909-1981, author
Spoken Language Services, 1976
Buku Referensi
Lanyon-Orgill, Peter A., author
Luzac & Co., 1944
Buku Referensi
Wilkinson, R. J. (Richard James), 1867-1941, author
Macmillan, 1959
Buku Referensi