Hoff, Jerry
Tatanusa, 1999
Buku Referensi
Rose, Dennis J.
The L:aw Book Company Limited, 1978
Buku Teks
Blom-Cooper, Louis Jacques
The Eastern Press, 1954
Buku Teks
Hoff, Jerry
Tatanusa, 1999
Buku Teks
Macneil, Ian R.
[Publisher not identified], 1966
Buku Teks