APA

Chrisman N. R., John Wiley & Sons, . (1997). Exploring geographic information systems. New York [i pozostałe]: John Wiley & Sons, Inc.

Chicago

Chrisman Nicholas R, John Wiley & Sons, . 1997. Exploring geographic information systems. New York [i pozostałe]: John Wiley & Sons, Inc.

Harvard

Chrisman N. R., John Wiley & Sons, . (1997). Exploring geographic information systems. New York [i pozostałe]: John Wiley & Sons, Inc.

MLA

Chrisman Nicholas R, John Wiley & Sons, . Exploring geographic information systems. New York [i pozostałe]: John Wiley & Sons, Inc. 1997.