Sherwin, K. (1971). Man Powered Flight. Model and Allied Pub.
Chicago Edition CitationSherwin, Keith. Man Powered Flight. Herts: Model and Allied Pub, 1971.
ציטוט MLASherwin, Keith. Man Powered Flight. Model and Allied Pub, 1971.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.