Walsh, J.H. & Ebert, D.A. (2007)

A review of the systematics of western North Pacific angel sharks, genus Squatina, with redescriptions of Squatina formosa, S. japonica, and S. nebulosa  (Chondrichthyes: Squatiniformes, Squatinidae)

. Zootaxa, 1551 (1), 31–47.