APA ציטוט

Portsmouth Polytechnic. Cartographic Unit. (1987). World mapping today. Butterworths.

Chicago Style (17th ed.) Citation

Portsmouth Polytechnic. Cartographic Unit. World Mapping Today. London: Butterworths, 1987.

ציטוט MLA

Portsmouth Polytechnic. Cartographic Unit. World Mapping Today. Butterworths, 1987.