APA (7th ed.) Citation

Freitas, T. R. M., Coelho, A., & Rossetti, R. J. F. (2009). Improving digital maps through GPS data processing.

Chicago Style (17th ed.) Citation

Freitas, Tiago R. M., António Coelho, and Rosaldo J. F. Rossetti. Improving Digital Maps Through GPS Data Processing. 2009.

MLA (8th ed.) Citation

Freitas, Tiago R. M., et al. Improving Digital Maps Through GPS Data Processing. 2009.