Παραπομπή σε μορφή APA (7η εκδ.)

Pickles, J. (1995). Ground truth: The social implications of geographic information systems. The Guilford Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Pickles, John. Ground Truth: The Social Implications of Geographic Information Systems. New York, NY: The Guilford Press, 1995.

Παραπομπή σε μορφή MLA (8th εκδ.)

Pickles, John. Ground Truth: The Social Implications of Geographic Information Systems. The Guilford Press, 1995.