APA (7th ed.) Citation

Perkins, J. W. (1972). Geology explained : Dartmoor and the Tamar Valley / by John W. Perkins ; illustrations by the author: Dartmoor and the Tamar Valley. David and Charles.

Chicago Style (17th ed.) Citation

Perkins, John W. Geology Explained : Dartmoor and the Tamar Valley / by John W. Perkins ; Illustrations by the Author: Dartmoor and the Tamar Valley. Newton Abbot: David and Charles, 1972.

MLA (9th ed.) Citation

Perkins, John W. Geology Explained : Dartmoor and the Tamar Valley / by John W. Perkins ; Illustrations by the Author: Dartmoor and the Tamar Valley. David and Charles, 1972.

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