Spreitzer, August. "The life history, external morphology, and osteology of the eastern sand darter, Ammocrypta pellucida (Putnam, 1863), an endangered Ohio species (Pisces: percidae) /." Master's thesis, Ohio State University, 1979. http://rave.ohiolink.edu/etdc/view?acc_num=osu1730129954953071Chicago Manual of Style (17th edition)