APA (7th ed.) Citation

Dreghorn, W. (1973). Geology explained in the Severn Vale and Cotswolds / by William Dreghorn ; illustrations by the author. David and Charles.

Chicago Style (17th ed.) Citation

Dreghorn, William. Geology Explained in the Severn Vale and Cotswolds / by William Dreghorn ; Illustrations by the Author. Newton Abbot: David and Charles, 1973.

MLA (9th ed.) Citation

Dreghorn, William. Geology Explained in the Severn Vale and Cotswolds / by William Dreghorn ; Illustrations by the Author. David and Charles, 1973.

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