Frampton, Kenneth, author
Van Nostrand Reinhold, 1997
Buku Teks
Malchow, Howard L., author
Bloomsbury Academic, an imprint of Bloomsbury Pub, 2016
Buku Teks
Brackman, Rabbi Levi, author
American Management Association;, 2008
eBooks
Jones, Tom B.
Dorsey Press, 1978
Buku Teks
Souliw, Charles Georges, author
J. Cape & H. Smith, 1931
Buku Teks