含有內容需登入查看的頁面 (link) Abdel-Haleem, Muhammad. The jizya Verse (Q. 9:29): Tax Enforcement on Non-Muslims in the First Muslim State. Journal of Qur'anic Studies
Institution Press. 1995: 421. ISBN 978-0-8157-9513-1. Boulden, Jane. Peaceenforcement: the United Nations experience in Congo, Somalia, and Bosnia. Greenwood
bullet (页面存档备份,存于互联网档案馆) Less-Lethal.org - Non Lethal and Less Lethal Law Enforcement Technologies (页面存档备份,存于互联网档案馆). Hosted by the International Association