Monsen, R. Joseph
Houghton Mifflin, 1967
Buku Teks
Ferrell, O.C.
McGraw-Hill, 2014
Buku Teks
Ferrell, O.C.
Martinus Nijhoff Publishers, 2016
Buku Teks
edited by Hakan Hakansson, Ivan Snehota
Emerald, 2017
eBooks
Ghillyer, Andrew W.
McGGraw-Hill Higher education, 2008
Buku Teks