Laithwaite, E. R. (1970). Propulsion without wheels. English University Press.
Chicago Edition CitationLaithwaite, E R. Propulsion Without Wheels. London: English University Press, 1970.
MLA引文Laithwaite, E R. Propulsion Without Wheels. English University Press, 1970.
警告：這些引文格式不一定是100％准確.