Reeve, L. A. (1844-1845). Monograph of the genus
Cardium. In:
Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 2, pl. 1-22 and unpaginated text. L. Reeve & Co., London. [stated dates: pl. 1-4 [3 undated], October 1844, pl. 5-8, November 1844; pl. 9-12, December 1844; pl. 13-16, January, 1845; pl. 17-22, March 1845].