Whittaker, David J.
Routledge, 2004
Buku Teks
edited by Abdul Rashid Moten and Noraini M. Noor
Thomson , 2007
Buku Teks
Chomsky, Noam
Claremont Avenue, 1986
Buku Teks SO
Karlina Helmanita, Irfan Abubakar and Dina Afrianty, editor
Universitas Islam Negeri Syarif Hidayatullah , 2004
Buku Teks
Coates, John 1
Westview Press, 1992
Buku Teks