Kroh, A.; Mooi, R. (2024). World Echinoidea Database. Porocidaris gracilis (Döderlein, 1885). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=569506 on 2024-08-24
basis of recordMortensen, T. (1928b). A Monograph of the Echinoidea. I. Cidaroidea, 551 pp., C. A. Reitzel & Oxford University Press, Copenhagen & London. page(s): 216-220 [details]