U-Boat Owners' Workshop Manual: An insight into the design, construction and opera

U-Boat 1936-45 (Type VIIA, B, C and Type VIIC/41): An insight into the design, construction and operation of the most feared German U-boat of World War 2 (Owners' Workshop Manual)

Kriegsmarine U-boats 1939–45 (1) (New Vanguard, 51)

Kriegsmarine U-boats 1939–45 (2) (New Vanguard, 55)