Tracey, Richard R.S., author
Butterworth, 1975
Buku Teks
De Smith, S.A. (Stanley A.), author
Penguin Books, 1994
Buku Teks
De Smith, S.A. (Stanley A.), author
Penguin Education, 1973
Buku Teks
Kaplan, Morton A., author
John Wiley & Sons, 1961
Buku Teks
Craswell, Richard, author
Oxford University Press, 1994
Buku Teks