Ryan, Michael J.; Fox, James H.; Wilczynski, Walter; Rand, A. Stanley (1990). "Sexual selection for sensory exploitation in the frog Physalaemus pustulosus". Nature. 343 (6253): 66–67. doi:10.1038/343066a0. ISSN0028-0836. PMID2296291.
Ryan, Michael J.; Fox, James H.; Wilczynski, Walter; Rand, A. Stanley (1990). "Sexual selection for sensory exploitation in the frog Physalaemus pustulosus". Nature. 343 (6253): 66–67. doi:10.1038/343066a0. ISSN0028-0836. PMID2296291.
Ryan, Michael J.; Fox, James H.; Wilczynski, Walter; Rand, A. Stanley (1990). "Sexual selection for sensory exploitation in the frog Physalaemus pustulosus". Nature. 343 (6253): 66–67. doi:10.1038/343066a0. ISSN0028-0836. PMID2296291.