Dienesch, R. 2021. Jak P. Mallmann Showell, Hitler’s Attack U-Boats: The Kriegsmarine’s WWII Submarine Strike Force (Rob Dienesch). The Northern Mariner / Le marin du nord. 31, 2 (Nov. 2021), 226–228. DOI:https://doi.org/10.25071/2561-5467.175.