Cooper, L. (1935). Aristotle, Galileo and the tower of Pisa. Cornell University Press.
Chicago Style aipamenaCooper, Lane. Aristotle, Galileo and the Tower of Pisa. Ithaca, N.Y: Cornell University Press, 1935.
MLA aipamenaCooper, Lane. Aristotle, Galileo and the Tower of Pisa. Cornell University Press, 1935.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.