The Minor Prophets: Obadiah - Historical and spiritual overview of the Biblical prophet. - http://www.zianet.com/maxey/Proph4.htm
Book of Ovadiyah - The text of the Biblical chapters in Hebrew and English. - http://www.hareidi.org/bible/Obadiah.htm
Catholic Encyclopedia: Abdias - Commentary on the Biblical prophet from the traditional Catholic perspective. - http://www.newadvent.org/cathen/01030b.htm
Jewish Encyclopedia: Obadiah - Overview of the prophet from the traditional Jewish perspective, including rabbinic commentary. - http://www.jewishencyclopedia.com/view.jsp?artid=4&letter=O
Obadiah - Profile of the prophet from a joint Lutheran and Catholic bible study project. - http://www.aboutbibleprophecy.com/p56.htm