Battle on the seven seas : German cruiser battles 1914-1918 / Gary Staff. — Barnsley : Pen & Sword Maritime, 2011. — 232 s. — ISBN:978-1-84884-182-6
Battle on the seven seas : German cruiser battles 1914-1918 / Gary Staff. — Barnsley : Pen & Sword Maritime, 2011. — 232 s. — ISBN:978-1-84884-182-6