Rohde, K., & Watson, N. A. (1994). Ultrastructure of the terminal parts of the protonephridial system of Baltoplana magna (Platyhelminthes, Kalyptorhynchia, Schizorhynchia, Karkinorhynchidae). Malaysian Journal of Science, 15(1&2), 13–19. Retrieved from http://jice.um.edu.my/index.php/MJS/article/view/4739