Ferguson, John H., author
McGraw-Hill, 1965
Buku Teks
Stephen J. Wayne [et all.]
Thomson, 2005
Buku Teks
Brudney, Kent M., author
Thomson, 2003
Buku Teks
Shafritz, Jay M., author
Thomson, 2006
Buku Teks
Woll, Peter, author
Little, Brown, 1984
Buku Teks