edited by Lawrence G. Weiss, Donald H. Saklofske, Diane Coalson, Susan Engi Raiford
Elsevier , 2010
Buku Teks SO
Richterich, Rene
John Wiley & Sons, 1978
Buku Teks SO
Sacher, Ronald A.
EGC, 2004
Buku Teks SO
Freud, Sigmund, 1856-1939
George Allen and Unwin, 1954
Buku Teks SO
Hearn, Lafcadio
Macmillan, 1913
Buku Teks SO