APA (7th ed.) Citation

Townsend, W. N. (1973). An introduction to the scientific study of the soil (5a. ed.). Edward Arnold.

Chicago Style (17th ed.) Citation

Townsend, W. N. An Introduction to the Scientific Study of the Soil. 5a. ed. Londres: Edward Arnold, 1973.

MLA (9th ed.) Citation

Townsend, W. N. An Introduction to the Scientific Study of the Soil. 5a. ed. Edward Arnold, 1973.