APA (7th ed.) Citation

Duckham, H., & Duckham, B. F. (1973). Great pit disasters : Great Britain, 1700 to the present day / (by) Helen and Baron Duckham: Great Britain, 1700 to the present day. David and Charles.

Chicago Style (17th ed.) Citation

Duckham, Helen, and Baron F. Duckham. Great Pit Disasters : Great Britain, 1700 to the Present Day / (by) Helen and Baron Duckham: Great Britain, 1700 to the Present Day. Newton Abbot: David and Charles, 1973.

MLA (9th ed.) Citation

Duckham, Helen, and Baron F. Duckham. Great Pit Disasters : Great Britain, 1700 to the Present Day / (by) Helen and Baron Duckham: Great Britain, 1700 to the Present Day. David and Charles, 1973.

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