APA (7th ed.) Citation

Campbell, E. M., & Clark, P. (1981). International directory of current research in the history of cartography and in carto-bibliography: No 3, 1981. [editor no identificat].

Chicago Style (17th ed.) Citation

Campbell, Eila M., and P.K Clark. International Directory of Current Research in the History of Cartography and in Carto-bibliography: No 3, 1981. [lloc de publicació no identificat]: [editor no identificat], 1981.

MLA (9th ed.) Citation

Campbell, Eila M., and P.K Clark. International Directory of Current Research in the History of Cartography and in Carto-bibliography: No 3, 1981. [editor no identificat], 1981.