SAGE , 2007
Buku Teks SO
by Randall R. Cottrell, James T. Girvan, Denise M. Seabert, Caile Spear, James F. McKenzie
Pearson Education, 2018
Buku Teks SO
Cottrell, Randall R.
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Buku Teks SO
O`Connor-Fleming, Mary Louise
Allen & Unwin, 2001
Buku Teks SO
editor, William B. Ward
JAI Press, 1987
Buku Teks SO