Andy Bennett, Steve Waksman
SAGE, 2015
Buku Teks SO
Dallin, Leon
WM. C. Brown Co. Pub., 1965
Buku Teks SO
Mandl, Matthew
Prentice-Hall, 1967
Buku Teks SO
Peterson, Veronica
Elsevier Mosby, 2013
Buku Teks SO
McMullin, Rian E
W.W. Norton, 2000
Buku Teks SO