APA (7th ed.) Citation

Nicholson, H. H. (1942). The principles of field drainage. University press.

Chicago Style (17th ed.) Citation

Nicholson, Harry Helstrip. The Principles of Field Drainage. Cambridge [England]: University press, 1942.

MLA (9th ed.) Citation

Nicholson, Harry Helstrip. The Principles of Field Drainage. University press, 1942.