Lua APA (7ú heag.)
Lo, C. P., & Yeung, A. K. W. (2002). Concepts and techniques of geographic information systems. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)
Lo, C. P., agus Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. Upper Saddle River, NJ: Prentice Hall, 2002.
Lua MLA (9ú heag.)
Lo, C. P., agus Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. Prentice Hall, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.