APA aipamena

Unwin, D. J., & Dawson, J. A. (1985). Computer programming for geographers. Longman.

Chicago Style aipamena

Unwin, David John, and John A. Dawson. Computer Programming for Geographers. London: Longman, 1985.

MLA aipamena

Unwin, David John, and John A. Dawson. Computer Programming for Geographers. Longman, 1985.