APA (7th ed.) Citation

Afonso, A. P., & Freitas, S. (2010). Geographic Information Retrieval Systems for Mobile Devices.

Chicago Style (17th ed.) Citation

Afonso, Ana Paula, and Sérgio Freitas. Geographic Information Retrieval Systems for Mobile Devices. 2010.

MLA (8th ed.) Citation

Afonso, Ana Paula, and Sérgio Freitas. Geographic Information Retrieval Systems for Mobile Devices. 2010.

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