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E. W. Gudger (1919). “On the Use of the Sucking-Fish for Catching Fish and Turtles: Studies in Echeneis or Remora, II., Part 1”. The American Naturalist. 53 (627): 289–311. doi:10.1086/279716. JSTOR2455925.
E. W. Gudger (1919). “On the Use of the Sucking-Fish for Catching Fish and Turtles: Studies in Echeneis or Remora, II., Part 2”. The American Naturalist. 53 (628): 446–467. doi:10.1086/279724. JSTOR2456185.