edited by Leslie Rutherford
Sweet & Maxwell, 1993
Buku Referensi
Bird, Roger
Sweet & Maxwell, 1983
Buku Teks
Schermerhorn, John R.
John Wiley & Sons, 1996
Buku Teks
Osborn, Richard K.
World Scientific, 1988
Buku Teks SO
Osborn, Alex
Charles Scribner`s Sons, 1952
Buku Teks SO