APA (7th ed.) Zitazioa

Cromley, R. G. (1992). Digital cartography. Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Cromley, Robert G. Digital Cartography. Englewood Cliffs: Prentice Hall, 1992.

MLA (9th ed.) Zitazioa

Cromley, Robert G. Digital Cartography. Prentice Hall, 1992.