APA-referens (7:e uppl.)

Hubert, P. G. (2001). Men of achievement: Inventors. Digital Scanning.

Chicago-referens (17:e uppl.)

Hubert, Philip Gengembre. Men of Achievement: Inventors. Scituate, Mass.: Digital Scanning, 2001.

MLA-referens (9:e uppl.)

Hubert, Philip Gengembre. Men of Achievement: Inventors. Digital Scanning, 2001.