APA-Zitierstil (7. Ausg.)

Helfrick, A. D. (1983). Practical repair and maintenance of communications equipment. Prentice-Hall.

Chicago-Zitierstil (17. Ausg.)

Helfrick, Albert D. Practical Repair and Maintenance of Communications Equipment. Englewood Cliffs, N.J.: Prentice-Hall, 1983.

MLA-Zitierstil (9. Ausg.)

Helfrick, Albert D. Practical Repair and Maintenance of Communications Equipment. Prentice-Hall, 1983.