Breton, Albert
University Press, 1998
Buku Teks
Tresch, Richard W.
Business Publications ; Georgetown, Ont. : Irwin-Dorsey, 1981.
Buku Teks
Ulbrich, Holley H., author
Taylor and Francis, 2013
Buku Teks
Academic Press, 2015
eBooks
Hyman, David N., author
Cengage Learning, 2014
Buku Teks