APA (7th ed.) Citation

178638 Kee, C., Parkinson, B. W., & Axelrad, P. Wide area differential GPS.

Chicago Style (17th ed.) Citation

178638 Kee, Changdon, Bradford W. Parkinson, and Penina Axelrad. Wide Area Differential GPS.

MLA (9th ed.) Citation

178638 Kee, Changdon, et al. Wide Area Differential GPS.