^Fried, B.; Beers, K.; Lewis Jr, P. D. (1993). "Lipids in the broodsac of Leucochloridium variae (Digenea, Leucochloridiidae) and its snail host Succinea ovalis". International Journal for Parasitology. 23 (1): 129–131. doi:10.1016/0020-7519(93)90105-8. PMID8468128..