Field, John
Routledge, 2005
Buku Teks SO
Chomsky, Noam
Cambridge University Press, 2006
eBooks
Marina Augustina Isakh
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1997
UI - Tesis Membership
edited by Michael Tomasello
Lawrence Erlbaum Associates, 2003
Buku Teks SO
Horman, Hans
Wissenschaftliche Buchgesellschaft, 1981
Buku Teks SO