(en) George Cameron Stone, A Glossary of the Construction, Decoration, and Use of Arms and Armor in All Countries and in All Times, Courier Corporation, , 694 p. (ISBN9780486407265, lire en ligne), p. 171
(en) « Ring is murderous weapon at short range », Popular Mechanics Magazine, , p. 316 (ISSN0032-4558, lire en ligne)
issn.org
portal.issn.org
(en) « Ring is murderous weapon at short range », Popular Mechanics Magazine, , p. 316 (ISSN0032-4558, lire en ligne)
sca.org
artemisia.sca.org
(en) Jerry Gilbert, « Thrown Weapon Types and Thrown Weapon Use 500 BCE to 1600 CE: a Study for Participants in the Society for Creative Anachronism's Thrown Weapons Program », Society for Creative Anachronism, (lire en ligne, consulté le )