APA (7th ed.) Zitazioa

Star, J., & Estes, J. (1990). Geographic Information Systems: An introduction. Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Star, Jeffrey, eta John Estes. Geographic Information Systems: An Introduction. Englewood Cliffs, N.J.: Prentice Hall, 1990.

MLA (9th ed.) Zitazioa

Star, Jeffrey, eta John Estes. Geographic Information Systems: An Introduction. Prentice Hall, 1990.