Thiroux, Jacques P. author
MacMillan Publishing Company, 1985
Buku Teks
Gordon, A. David
New York Longman 1996,
Buku Teks
edited by Ronald Bayer [and others]
Oxford University Press, 2007
Buku Teks
Robert W. McGee, editor
[Springer, ], 2012
eBooks
edited by Catherine Gowthorpe and John Blake
Routledge , 1998
Buku Teks