APA引文

(1996). Leonardo the inventor. Cambridge, MA: SoftKey International Inc.

Trích dẫn kiểu Chicago

Leonardo the Inventor. Cambridge, MA: SoftKey International Inc, 1996.

MLA引文

Leonardo the Inventor. Cambridge, MA: SoftKey International Inc, 1996.

警告：這些引文格式不一定是100％准確.