Os-Trigonum - Variation of a Common Accessory Ossicle of the Talusv. 80No. 10AMER PODIATRIC MED ASSN536–539
Mann, R. W. and Owsley, Douglas W. 1990. "Os-Trigonum - Variation of a Common Accessory Ossicle of the Talus." Journal of the American Podiatric Medical Association, 80, (10) 536–539.