Siobhan Chapman
Oxford University Press, 2005
Buku Teks
Barry Lee, editor
Continuum International Pub. Group, 2011
Buku Teks
Katz, Jerrold J., author
George Allen and Unwin, 1972
Buku Teks
Edinburgh, Edinburgh University Press, 2005
Buku Referensi
Katz, Jerrold J., author
Harper & Row, 1966
Buku Teks