edited by Mason Haire
John Wiley & Sons, 1959
Buku Teks
Hatch, Mary Jo
Oxford University Press, 2013
Buku Teks
Pugh, Derek S.
[Publisher not identified], [Date of publication not identified]
Buku Teks
Miles, Robert H.
Goodyear Publishing Company, 1980
Buku Teks
by James L. Gibson, John M. Ivancevich, James H. Donnelly, Robert Konopaske
McGraw-Hill, 2009
Buku Teks