Levin, Beth
Cambridge University Press, 2005
Buku Teks SO
Syahruddin Kaseng
Fakultas Ilmu Pengatahuan Budaya Universitas Indonesia, 1974
UI - Disertasi Membership
Cambridge University Press, 2003
eBooks
Marouzeau, J. [Jules], 1878-1964
Geuthner, 1944
Buku Teks
Dik, Simon Cornelis
North-Holland, 1968
Buku Teks SO