Christiansen, Rich, 1965-, author
McGraw-Hill, 2012
Buku Teks
Christiansen, Rich, 1965-, author
McGraw-Hill, 2012
Buku Teks
Tracy, Brian, author
American Management Association, 2002
eBooks
Abrahan, Joe,author
McGraw-Hill, 2011
Buku Teks
Wilson, Susan B., author
American Management Association, 2008
eBooks