APA Edition Citation

Helliwell, R. A., Pettit, J. M., & Terman, F. E. (1955). Electronic and radio engineering (Ed.4.).

Chicago Edition Citation

Helliwell, Robert Arthur, Joseph Mayo Pettit, and Frederick Emmons Terman. Electronic and Radio Engineering. Ed.4. Tokyo, M C Graw Hill Kogakusha, 1955.

MLA Edition Citation

Helliwell, Robert Arthur, et al. Electronic and Radio Engineering. Ed.4. 1955.