Thorn, Eric A.
Jay Books , 1989
Buku Teks
Schmitthoff, Clive M., author
Stevens and Sons Limited, 1975
Buku Teks
Schmitthoff, Clive M., author
Stevens & Sons, 1990
Buku Teks
Sweet and Maxwell, 1975
Buku Teks
Lafrance, Mary, author
West Group, 2009
Buku Teks