APA (7th ed.) Citation

Kirby, C. (1979). Water in Great Britain / (by) Celia Kirby. Penguin.

Chicago Style (17th ed.) Citation

Kirby, Celia. Water in Great Britain / (by) Celia Kirby. Harmondsworth (etc.): Penguin, 1979.

MLA (9th ed.) Citation

Kirby, Celia. Water in Great Britain / (by) Celia Kirby. Penguin, 1979.

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