APA (7th ed.) Citation

Steel, R. W., & Steel, E. M. (1981). Africa (2.ed.). Longman.

Chicago Style (17th ed.) Citation

Steel, Robert W., and Eileen M. Steel. Africa. 2.ed. London: Longman, 1981.

MLA (9th ed.) Citation

Steel, Robert W., and Eileen M. Steel. Africa. 2.ed. Longman, 1981.