APA (7th ed.) Citation

Helfrick, A. D. (1982). Amateur radio equipment fundamentals. Prentice-Hall.

Chicago Style (17th ed.) Citation

Helfrick, Albert D. Amateur Radio Equipment Fundamentals. Englewood Cliffs, NJ: Prentice-Hall, 1982.

MLA (9th ed.) Citation

Helfrick, Albert D. Amateur Radio Equipment Fundamentals. Prentice-Hall, 1982.

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