Reeve, L. A. (1859). Monograph of the genus
Placunanomia. In:
Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 11, pl. 1-3 and unpaginated text. L. Reeve & Co., London. [stated dates: pls. 2, 3, Jun. 1859; 1, Aug. 1859].