APA (7th ed.) Citation

Royal Geographical Society (Great Britain) & The Institute of British Geographers. (2002). Philip's quick reference world atlas. Philip's.

Chicago Style (17th ed.) Citation

Royal Geographical Society (Great Britain) and The Institute of British Geographers. Philip's Quick Reference World Atlas. London: Philip's, 2002.

MLA (8th ed.) Citation

Royal Geographical Society (Great Britain) and The Institute of British Geographers. Philip's Quick Reference World Atlas. Philip's, 2002.