Sherwin, K. (1971). Man Powered Flight. Model and Allied Pub.
Chicago Style aipamenaSherwin, Keith. Man Powered Flight. Herts: Model and Allied Pub, 1971.
MLA aipamenaSherwin, Keith. Man Powered Flight. Model and Allied Pub, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.