Tresch, Richard W.
Business Publications ; Georgetown, Ont. : Irwin-Dorsey, 1981.
Buku Teks
Academic Press, 2015
eBooks
Ulbrich, Holley H., author
Taylor and Francis, 2013
Buku Teks
Hicks, Ursula K., author
Kinokuniya , 1959
Buku Teks
edited by Carl S. Shoup
Aldine Publishing, 1969
Buku Teks