อ้างอิง ของ ซอร์เดส

  1. ↑ Sharov, A. G. 1971 Novyiye lyetayushchiye reptili iz myezozoya Kazakhstana i Kirgizii [New flying reptiles from the Mesozoic of Kazakhstan and Kirghizia]. Trudy paleont. Inst. Moscow. Russian text with end plates.