APA (7th ed.) Citation

Steers, J. A. (1942). An introduction to the study of map projections (5th ed.). University of London press, ltd..

Chicago Style (17th ed.) Citation

Steers, James Alfred. An Introduction to the Study of Map Projections. 5th ed. London: University of London press, ltd., 1942.

MLA (9th ed.) Citation

Steers, James Alfred. An Introduction to the Study of Map Projections. 5th ed. University of London press, ltd., 1942.