Rogers, Everett M.
Free Press, 1994
Buku Teks SO
Grabar, V.E.
Clarendon Press, 1990
Buku Referensi
Miller, Edmund Morris
Sydney University Press, 1973
Buku Teks SO
University of Michigan Press, 1970
Buku Teks SO
Scollon, Ronald
Blackwell Publishing, 2001
Buku Teks SO