Barber, Charles
Cambridge University Press, 1993
Buku Teks
Brunot, Ferdinand, author
Masson, 1949
Buku Teks
edited by Marianne Hundt, Sandra Mollin, Simone E. Pfenninger
Cambridge University Press, 2017
Buku Teks
Mufwene, Salikoko S, author
Cambridge University Press , 2001
Buku Teks
selected and introduced by Roy Harris
Routledge/Thoemmes Press, 1995
Buku Referensi