APA-viite (7. p.)
Lo,C.P, & Yeung,Albert K.W. (2011). Concepts and techniques of geographics information systems (2nd ed.). PHI Learning.
Chicago-viite (17. p.)
Lo,C.P, ja Yeung,Albert K.W. Concepts and Techniques of Geographics Information Systems. 2nd ed. New Delhi: PHI Learning, 2011.
MLA-viite (9. p.)
Lo,C.P, ja Yeung,Albert K.W. Concepts and Techniques of Geographics Information Systems. 2nd ed. PHI Learning, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.