Helfrick, A. D. (1994). Modern aviation electronics / Albert Helfrick (2nd ed.). Prentice Hall.
Chicago Style (17th ed.) CitationHelfrick, Albert D. Modern Aviation Electronics / Albert Helfrick. 2nd ed. Englewood Cliffs, N.J.: Prentice Hall, 1994.
MLA (9th ed.) CitationHelfrick, Albert D. Modern Aviation Electronics / Albert Helfrick. 2nd ed. Prentice Hall, 1994.
Warning: These citations may not always be 100% accurate.