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