Blumenthal, Joseph C.
Harcourt Brace Jovanovich, 1972
Buku Teks
by Howard W. Alexander... [et.al.]
W.A. Benjamin, 1968
Buku Teks
Makkink, H.J., author
Nijgh and Van Ditmar, 1951
Buku Teks
Helling, Pam, author
[American Management Association, ], 1992
eBooks
Langan, John, 1942-, author
McGraw-Hill, 2013
Buku Teks