Agrawal, V. “Four Trematode Parasites (Plagiorchiidae Lühe, 1901 Emend. Ward, 1917) from Reptiles of Lucknow”. Revista De Biología Tropical, vol. 14, no. 2, Dec. 1966, pp. 133–151, doi:10.15517/rev.biol.trop.1966.28488.