Scott, Ronald W, author
Jones & Bartlett Learning, 2013
Buku Teks
T.M.C. Asser Press, 2012
eBooks
James, Vaughn E., author
American Management Association, 2009
eBooks
Batten, Jack
Penguin Books, 1985
Buku Teks
Luban, David
Princeton University press, 1988
Buku Teks