APA (7th ed.) Citation

Marble, D. F., Calkins, H. W., & Peuquet, D. J. (1984). Basic readings in geographic information systems. SPAD Systems.

Chicago Style (17th ed.) Citation

Marble, Duane F., Hugh W. Calkins, and Donna J. Peuquet. Basic Readings in Geographic Information Systems. Williamsville, N.Y: SPAD Systems, 1984.

MLA (9th ed.) Citation

Marble, Duane F., et al. Basic Readings in Geographic Information Systems. SPAD Systems, 1984.

Warning: These citations may not always be 100% accurate.