Collins, Lawrence, author
Clarendon Press, 1994
Buku Teks
Dessem, R. Lawrence, author
Thomson/West, 2011
Buku Teks
Archibald, Todd L., 1951-, author
Carswell , 2012
Buku Teks
Jorda, Karl F., speaker
Universitas Tarumanegara, 1991
Buku Teks
Goldrein, Lain S., author
Sweet & Maxwell, 2011
Buku Teks