Griffiths, Peter, author
Edward Arnold, 1987
Buku Teks
McBride, Nicholas J., author
Palgrave, 2014
Buku Teks
edited by Donald F. Kuratko, Sherry Hoskinson
Emerald, 2017
eBooks
Jacobson, Michael D., author
Routledge, 1987
Buku Teks
edited by Alexander T.J. Lennon
The Mitt Press, 2002
Buku Teks