Croft, William
Cambridge University Press , 1990
Buku Teks SO
Good Jeff
Cambridge University Press, 2016
Buku Teks SO
Hawkins, John A.
Basil Black Well , 1988
Buku Teks SO
Hayon, Josep
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2000
UI - Tesis Membership
Sandler, Wendy
Cambridge University Press, 2006
Buku Teks