(en) Norman D Anderson, Ferris wheels : an illustrated history, Bowling Green (Ohio), Bowling Green State University Popular Press, , 407 p. (ISBN0879725311 et 9780879725310, OCLC632713796, lire en ligne), p. 94, 95.
(en) Norman D Anderson, Ferris wheels : an illustrated history, Bowling Green (Ohio), Bowling Green State University Popular Press, , 407 p. (ISBN0879725311 et 9780879725310, OCLC632713796, lire en ligne), p. 113.
(en) Norman D Anderson, Ferris wheels : an illustrated history, Bowling Green (Ohio), Bowling Green State University Popular Press, , 407 p. (ISBN0879725311 et 9780879725310, OCLC632713796, lire en ligne), p. 94, 95.
(en) Norman D Anderson, Ferris wheels : an illustrated history, Bowling Green (Ohio), Bowling Green State University Popular Press, , 407 p. (ISBN0879725311 et 9780879725310, OCLC632713796, lire en ligne), p. 113.