Cita APA (7a ed.)
Helfrick, A. D. (2010). Principles of avionics (6th ed.). Avionics Communications, Inc..
Cita Chicago Style (17a ed.)
Helfrick, Albert D. Principles of Avionics. 6th ed. Leesburg, VA: Avionics Communications, Inc., 2010.
Cita MLA (9a ed.)
Helfrick, Albert D. Principles of Avionics. 6th ed. Avionics Communications, Inc., 2010.
Precaución: Estas citas no son 100% exactas.