Billah, Mohd. Ma`sum
Applied Islamic law of trade and finance : a selection of contemporary issues
Sweet & Maxwell, 2007
 Buku Teks SO
Contemporary issues in applied and professional ethics
edited by Marco Grix, Tim Dare
Emerald, 2016
 eBooks
Salim, Arskal
Contemporary islamic law in Indonesia
Edinburgh University Press, 2015
 eBooks
Billah, Mohd. Ma`sum
Penerapan hukum dagang dan keuangan Islam: isu-isu pilihan praktis kontemporer=Applied Islamic law of trade and finance
Sweet & Maxell Asia, 2009
 Buku Teks SO
Contemporary issues in law enforcement and policing
Andrew Millie, Dilip K. Das, editor
CRC Press, Taylor & Francis Group, 2008
 Buku Teks