Cita APA (7th ed.)

Peuquet, D. J., & Marble, D. F. (1990). Introductory Readings in Geographic Information Systems. Taylor & Francis.

Cita Chicago (17th ed.)

Peuquet, Donna J., i Duane F. Marble. Introductory Readings in Geographic Information Systems. London: Taylor & Francis, 1990.

Cita MLA (9th ed.)

Peuquet, Donna J., i Duane F. Marble. Introductory Readings in Geographic Information Systems. Taylor & Francis, 1990.