Cita APA (7th ed.)
Lo,C.P, & Yeung,Albert K.W. (2011). Concepts and techniques of geographics information systems (2nd ed.). PHI Learning.
Cita Chicago (17th ed.)
Lo,C.P, i Yeung,Albert K.W. Concepts and Techniques of Geographics Information Systems. 2nd ed. New Delhi: PHI Learning, 2011.
Cita MLA (9th ed.)
Lo,C.P, i Yeung,Albert K.W. Concepts and Techniques of Geographics Information Systems. 2nd ed. PHI Learning, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.