Ellen F.Crain, Jeffrey C.Gershel, EJohn Gallagher
McGraw-Hill, 1992
Buku Teks SO
Mehta, Vivek
LAP LAMBERT Academic Publishing, 2014
Buku Teks SO
edited by James G. Adam, Erik D. Barton, Jamie Collings, Peter M.C. DeBlieux, Michael A. Gisondi and Eric S. Nadel
Elsevier/Saunders, 2013
Buku Teks SO
Mistovich, Joseph J.
Prentice-Hall, 2000
Buku Teks SO
editor, Karen L. Roos
Springer Science , 2012
eBooks