APA Style
Showell, J, P, M. (2020).
Hitler's Attack U-boats: The Kriegsmarine's WWII Submarine Strike Force / by J. P. Mallmann Showell (1).
Barnsley, South Yorkshire .:
Frontline Books.
MLA Style
Showell, Jak, P., Mallmann.
"Hitler's Attack U-boats: The Kriegsmarine's WWII Submarine Strike Force / by J. P. Mallmann Showell".
1
Barnsley, South Yorkshire .:
Frontline Books,
2020.
หนังสือ (Book).