Coba jelasin Lihat pula dari Kalung doa dong

Dubin, L.S. (2009). Prayer Beads. In C. Kenney (Ed.), The History of Beads: From 100,000 B.C. to the Present (Revised and Expanded Edition) (pp. 79–92). New York: Abrams Publishing.

Henry, G., & Marriott, S. (2008). Beads of Faith: Pathways to Meditation and Spirituality Using Rosaries, Prayer Beads and Sacred Words. Fons Vitae Publishing.

Untracht, O. (2008). Rosaries of India. In H. Whelchel (Ed.), Traditional Jewelry of India (pp. 69–73). New York: Thames & Hudson, Inc.

Wiley, E., & Shannon, M.O. (2002). A String and a Prayer: How to Make and Use Prayer Beads. Red Wheel/Weiser, LLC.

Winston, K. (2008). Bead One, Pray Too: A Guide to Making and Using Prayer Beads. Morehouse Publishing.