APA (7th ed.) Citation

Martin, F., & Whittle, A. (1988). Skills in geography (1. publ.). Heinemann.

Chicago Style (17th ed.) Citation

Martin, Fred, and Aubrey Whittle. Skills in Geography. 1. publ. London: Heinemann, 1988.

MLA (9th ed.) Citation

Martin, Fred, and Aubrey Whittle. Skills in Geography. 1. publ. Heinemann, 1988.