Παραπομπή APA

Pickles , J. (2006). Social implications of geographic information systems. Rawat.

Παραπομπή Chicago Style

Pickles , John. Social Implications of Geographic Information Systems. Jaipur: Rawat, 2006.

Παραπομπή MLA

Pickles , John. Social Implications of Geographic Information Systems. Rawat, 2006.