McClanahan, Lon L.; Shoemaker, Vaughan H. & Ruibal, Rodolfo (1976). "Structure and function of the cocoon of a ceratophryd frog". Copeia. 1976 (1): 179–185. doi:10.2307/1443788. JSTOR1443788.
McClanahan, Lon L.; Shoemaker, Vaughan H. & Ruibal, Rodolfo (1976). "Structure and function of the cocoon of a ceratophryd frog". Copeia. 1976 (1): 179–185. doi:10.2307/1443788. JSTOR1443788.