APA (7th ed.) Citation

Sheikh, S. I., & unknown. (2006). "Performance of Cavity Backed Inverted Microstrip Broadband Antenna".

Chicago Style (17th ed.) Citation

Sheikh, S. I., and unknown. "Performance of Cavity Backed Inverted Microstrip Broadband Antenna". 2006.

MLA (9th ed.) Citation

Sheikh, S. I., and unknown. "Performance of Cavity Backed Inverted Microstrip Broadband Antenna". 2006.

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