APA (7th ed.) Citation

Avery, B. W. (1980). Soil classification for England and Wales (higher categories) / by B.W. Avery. Soil Survey of England and Wales.

Chicago Style (17th ed.) Citation

Avery, B. W. Soil Classification for England and Wales (higher Categories) / by B.W. Avery. Soil Survey of England and Wales, 1980.

MLA (9th ed.) Citation

Avery, B. W. Soil Classification for England and Wales (higher Categories) / by B.W. Avery. Soil Survey of England and Wales, 1980.

Warning: These citations may not always be 100% accurate.