Buku Teks
Cooke, Brian, author
Wiley-Blackwell, 2011
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1954
Buku Teks
Hampton, John R., author
Churchill Livingstone/Elsevier, 2013
Buku Teks
Brazier, Rodney, author
Oxford University Press, 1988
Buku Teks