Glazebrook, P.R., author
Blackstones Press Ltd., 2000
Buku Teks
Carlan, Philip E., author
Jones and Bartlett , 2011
Buku Teks
Cremona, Marise, author
Macmillan, 1989
Buku Teks
Smith, J. C. (John Cyril), author
Butterworth, 1992
Buku Teks
Smith, J. C. (John Cyril), author
Butterworth, 1983
Buku Teks