Field, John
Routledge, 2005
Buku Teks SO
Steinberg, Danny D.
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Buku Teks SO
edited by Michael Tomasello
Lawrence Erlbaum Associates, 2003
Buku Teks SO
edited by Frederick J. Newmeyer
Cambridge University Press, 1994
Buku Teks SO
edited by Howard Giles and W. Peter Robinson
John Wiley & Sons, 1990
Buku Referensi