APA (7th ed.) Citation

Stefani, I. L., & Perryman, R. (1975). Liquid-cooled power amplifier. Wireless World., 81, 220.

Chicago Style (17th ed.) Citation

Stefani, I. L., and R. Perryman. "Liquid-cooled Power Amplifier." Wireless World. 81 (1975): 220.

MLA (9th ed.) Citation

Stefani, I. L., and R. Perryman. "Liquid-cooled Power Amplifier." Wireless World., vol. 81, 1975, p. 220.

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