Bernhardsen, T. (1999). Geographic information systems: An introduction (2nd ed.). John Wiley.
シカゴスタイル引用形Bernhardsen, Tor. Geographic Information Systems: An Introduction. 2nd ed. New York: John Wiley, 1999.
MLA引用形式Bernhardsen, Tor. Geographic Information Systems: An Introduction. 2nd ed. John Wiley, 1999.
警告: この引用は必ずしも正確ではありません.