Hubert, P. G. (2001). Men of achievement: Inventors. Digital Scanning.
芝加哥风格引文Hubert, Philip Gengembre. Men of Achievement: Inventors. Scituate, Mass.: Digital Scanning, 2001.
MLA引文Hubert, Philip Gengembre. Men of Achievement: Inventors. Digital Scanning, 2001.
警告：这些引文格式不一定是100％准确.