Template:Ng, Chen & Fang, 1999
- Ng, P.K.L., Chen, H. & Fang, S-H 1999. New species and new records of box crabs (Callapa) (Crustacea: Decapoda: Brachyura: Calippidae) from the Philippines. Journal of the National Taiwan Museum 55 (1): 41-60. [not seen]