Sowerby, G. B. II. (1871). Monograph of the genus
Yoldia. In:
Conchologia iconica, or illustrations of the shells of molluscous animals, vol. 18: pls. 1-5 and unpaginated text. L. A. Reeve, London. [stated dates: pls. 2, Feb. 1871; 1, 3-5, Nov. 1871].