Osterwalder, Alexander, author
Wiley , 2010
Buku Teks
Bradberry, John, 1961-, author
American Management Association, 2011
eBooks
Hoque, Faisal, Uthor
[American Management Association, ], 2011
eBooks
Johnson, Joseph French
Alexander Hamilton Institute, 1962
Buku Teks
A & C Black Publishers, 2006
Buku Referensi