Perum Percetakan Uang Republik Indonesia, [date of publication not identified]
Buku Referensi
Perum Percetakan Uang Republik Indonesia, [date of publication not identified]
Buku Referensi
Perum Percetakan Uang Republik Indonesia, [date of publication not identified]
Buku Referensi
Conrad, Earl
New York, 1961
Buku Teks
Carnegie, Dale
Apollo, [date of publication not identified]
Buku Teks