Artikel Jurnal
Verster, Joris C.
Springer, 2012
eBooks
Research, Data, and Information Center Natinal Narcotics Board of The Republic of Indonesia, 2019
Buku Teks
O`Brien, Robert, editor
Facts On File, 1984
Buku Referensi
edited by Griffith Edwards ... [et at.]
Saxon House, 1976
Buku Teks