APA (7th ed.) Citation

Helfrick, A. (2010). Principles of avionics (6. ed.). Avionics Communications.

Chicago Style (17th ed.) Citation

Helfrick, Albert. Principles of Avionics. 6. ed. Leesburg, VA: Avionics Communications, 2010.

MLA (9th ed.) Citation

Helfrick, Albert. Principles of Avionics. 6. ed. Avionics Communications, 2010.

Warning: These citations may not always be 100% accurate.