APA (7th ed.) Citation
Helfrick, A. (2000). Principles of Avionics (9th ed.). Avionics Communications Inc.
Chicago Style (17th ed.) Citation
Helfrick, Albert. Principles of Avionics. 9th ed. United States of America: Avionics Communications Inc, 2000.
MLA (9th ed.) Citation
Helfrick, Albert. Principles of Avionics. 9th ed. Avionics Communications Inc, 2000.
Warning: These citations may not always be 100% accurate.