edited by Paul L. Kleinsorge
University of Oregan Books, 1966
Buku Teks
Tresch, Richard W.
Business Publications ; Georgetown, Ont. : Irwin-Dorsey, 1981.
Buku Teks
Academic Press, 2015
eBooks
Hicks, Ursula K.
Kinokuniya , 1959
Buku Teks
Rosen, Harvey S.
McGraw-Hill, 2010
Buku Teks