Cheung, P. & Whitaker, B. (1993)
A new dendromonocotylinid (monogenean) from the skin of the roughtail stingray, Dasyatis centroura Mitchill. Journal of Aquariculture and Aquatic Sciences, 6, 63–68
Cheung, P. (1993)
Eimeria southwelli Halawani, 1930 (Apicomplexa: Coccidia) from a new host, the cownose ray, Rhinoptera bonasus Mitchill. Journal of Aquariculture and Aquatic Sciences, 6(3), 68–75