APA (7th ed.) Citation

Gillingham, J. (1997). Richard I, Galley-Warfare and Portsmouth: The beginnings of a royal navy.

Chicago Style (17th ed.) Citation

Gillingham, John. Richard I, Galley-Warfare and Portsmouth: The Beginnings of a Royal Navy. 1997.

MLA (9th ed.) Citation

Gillingham, John. Richard I, Galley-Warfare and Portsmouth: The Beginnings of a Royal Navy. 1997.

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