Zatz, Joel L.
John Wiley & Sons, 1981
Buku Teks SO
Ansel, Howard C., 1933-
Wolters Kluwer, 2017
Buku Teks SO
Daniels, Joanne M.
Delmar Cengage Learning, 2006
Multimedia
Tyler G. Hicks, editor ; S. David Hicks, coordinating editor
McGraw-Hill, 1985
Buku Referensi
edited by Tyler G. Hicks
McGraw-Hill, 1997
Buku Referensi