edited by R.S. Singh ... [et al.]
Oxford & IBH, 1988
Buku Teks
Cooper, J.I., author
Chapman and Hall, 1984
Buku Teks
Baharuddin Salleh
Dewan Bahasa dan Pustaka Kementerian Pendidikan Malaysia, 1988
Buku Teks
Agrios, George N.
Gadjah Mada University Press, 1996
Buku Teks
Jacobs, William P., author
Cambridge University Press , 1979
Buku Teks