Salverda, Reinier, author
I.C.G. Printing, 1985
Buku Teks
Victoria A. Fromkin
Blackwell Publishers, 2001
Buku Teks
editors, S.P. Corder, E. Roulet
AIMAV, 1974
Buku Teks
edited by Anne E. Baker and Kees Hengeveld
Wiley-Blackweell, 2012
Buku Teks
edited by Archibald A. Hill
Voice of America, 1969
Buku Teks