Zultanawar
Badan Pembinaan Hukum Nasional, Kementerian Hukum dan HAM Republik Indonesia, 1978
Buku Teks
Bloomsbury Publishing Limited, 1993
Buku Referensi
Chambers, 1994
Buku Referensi
edited by Susan M. Lloyd
Penguin Books, [date of publication not identified]
Buku Referensi
Penguin Books, 1987
Buku Referensi