Swinden, G. 2021. Angus Konstam, Tirpitz in Norway: X-craft midget submarines raid the fjords, Operation Source 1943 (Greg Swinden). The Northern Mariner / Le marin du nord. 30, 1 (Jun. 2021), 98–99. DOI:https://doi.org/10.25071/2561-5467.108.