APA (7th ed.) Citation

Johnson, A. I., & Petterson, C. B. (1992). Geographic information systems (GIS) and mapping: Practices and standards. American Society for Testing & Materials.

Chicago Style (17th ed.) Citation

Johnson, A. I., and C. B. Petterson. Geographic Information Systems (GIS) and Mapping: Practices and Standards. Philadelphia: American Society for Testing & Materials, 1992.

MLA (8th ed.) Citation

Johnson, A. I., and C. B. Petterson. Geographic Information Systems (GIS) and Mapping: Practices and Standards. American Society for Testing & Materials, 1992.