Cita APA (7th ed.)
Jefferson, T. (2001). Letters. Infomotions, Inc. ; Virginia Tech..
Cita Chicago (17th ed.)
Jefferson, Thomas. Letters. [South Bend, IN] : [Blacksburg, VA]: Infomotions, Inc. ; Virginia Tech., 2001.
Cita MLA (9th ed.)
Jefferson, Thomas. Letters. Infomotions, Inc. ; Virginia Tech., 2001.
Atenció: Aquestes cites poden no estar 100% correctes.