APA ציטוט
Heywood, D. I., Carver, S., & Cornelius, S. (2011). An introduction to geographical information systems (4th ed.). Prentice Hall.
Chicago Style (17th ed.) Citation
Heywood, D. Ian, Steve Carver, and Sarah Cornelius. An Introduction to Geographical Information Systems. 4th ed. Harlow, England Toronto: Prentice Hall, 2011.
ציטוט MLA
Heywood, D. Ian, et al. An Introduction to Geographical Information Systems. 4th ed. Prentice Hall, 2011.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.