Chomsky, Noam, author
The Hague, 1970
Buku Teks
Cowen, Perlw Slavik, author
Mosby Elsevier, 2006
Buku Teks
edited by David Kent, Michael Sherer and Stuart Turley
Harper & Row, 1985
Buku Teks
Bonnicksen, Andrea L
Mayfield Publishing Company, 1982
Buku Teks
Foster, Steve, author
Oxford university press, 2012
Buku Teks