Farmer, C. G.; and Sanders, K. Unidirectional airflow in the lungs of alligators. Science. 2010, 327 (5963): 338–340. doi:10.1126/science.1180219.引文使用过时参数coauthor (帮助)
Ji, Q; Ji, SA; Cheng, YN; et al. "(December 2004). "Palaeontology: pterosaur egg with a leathery shell. Nature. December 2004, 432 (7017): 572. PMID 15577900. doi:10.1038/432572a.
Oliveira, C.E.M.; Santucci, R.M.; Andrade, M.B.; Fulfaro, V.J.; Basílo, J.A.F.; Benton, M.J. Crocodylomorph eggs and eggshells from the Adamantina Formation (Bauru Group), Upper Cretaceous of Brazil. Palaeontology. 2011, 54 (2): 309–321. doi:10.1111/j.1475-4983.2010.01028.x.
Ji, Q; Ji, SA; Cheng, YN; et al. "(December 2004). "Palaeontology: pterosaur egg with a leathery shell. Nature. December 2004, 432 (7017): 572. PMID 15577900. doi:10.1038/432572a.