edited by James Duffy and Robert A. Manners
D. Van Nostrand, 1961
Buku Teks SO
Bird, Doni L.
Saunders/Elsevier, 2009
Buku Teks SO
Torres, Hazel O.
Saunders, 2008
Multimedia
Torres, Hazel O.
saunders, 2008
Multimedia
Medina, Harold R.
Matthew Bender, 1954
Buku Teks SO