Cita APA (7th ed.)
Crossley, F. J. (2011). The hidden threat: The story of mines and minesweeping by the Royal Navy in World War I. Pen & Sword Maritime.
Cita Chicago (17th ed.)
Crossley, F. Jim. The Hidden Threat: The Story of Mines and Minesweeping by the Royal Navy in World War I. Barnsley: Pen & Sword Maritime, 2011.
Cita MLA (9th ed.)
Crossley, F. Jim. The Hidden Threat: The Story of Mines and Minesweeping by the Royal Navy in World War I. Pen & Sword Maritime, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.