APA (7th ed.) Citation

Bell, F. G. (1978). Foundation engineering in difficult ground. Newnes-Butterworth.

Chicago Style (17th ed.) Citation

Bell, F. G. Foundation Engineering in Difficult Ground. London ; Boston: Newnes-Butterworth, 1978.

MLA (8th ed.) Citation

Bell, F. G. Foundation Engineering in Difficult Ground. Newnes-Butterworth, 1978.