APA (7th ed.) Zitazioa

Vernon, M. D. (1971). Reading and its difficulties: A psychological study. C.U.pr..

Chicago Style (17th ed.) Zitazioa

Vernon, M. D. Reading and Its Difficulties: A Psychological Study. Cambridge: C.U.pr., 1971.

MLA (9th ed.) Zitazioa

Vernon, M. D. Reading and Its Difficulties: A Psychological Study. C.U.pr., 1971.