APA (7th ed.) Citation

Blacksher, S., & Foley, T. (2002). Boulder Hops Aboard GPS Tracking. GPS World, 13(1), 12.

Chicago Style (17th ed.) Citation

Blacksher, Steve, and Tom Foley. "Boulder Hops Aboard GPS Tracking." GPS World 13, no. 1 (2002): 12.

MLA (9th ed.) Citation

Blacksher, Steve, and Tom Foley. "Boulder Hops Aboard GPS Tracking." GPS World, vol. 13, no. 1, 2002, p. 12.