APA (7th ed.) Citation

Clarke, J. I. (1969). Sierra Leone in maps ([2d ed.). University of London Press.

Chicago Style (17th ed.) Citation

Clarke, John Innes. Sierra Leone in Maps. [2d ed. London]: University of London Press, 1969.

MLA (9th ed.) Citation

Clarke, John Innes. Sierra Leone in Maps. [2d ed. University of London Press, 1969.