McLaurin, Brett T., author
Springer, 2012
eBooks
Caballero-Anthony, Mely, editor
Springer, 2012
eBooks
W. Neil Adger, editor
Cambridge University Press, 2009
Buku Teks
Mannion, A. M.
Longman Scientific & Technical, 1991
Buku Teks
Owen, Oliver S., author
Prentice-Hall, 1998
Buku Teks