Learned, Edmund P. (Edmund Philip), 1900-1991, author
Andover Press, 1957
Buku Teks
by the editors of Fortune
Doubleday, 1956
Buku Teks
Campbell, Margaret L., author
McGraw-Hill, 2009
Buku Teks
Nayduch, Donna, author
Salemba Empat, 2014
Buku Teks
Campbell, Margaret L., author
Salemba Empat, 2013
Buku Teks