APA-čujuhus (7. p.)
Duffy, J. P. (2001). Hitler's secret pirate fleet: The deadliest ships of World War II. Praeger.
Chicago-čujuhus (17. p.)
Duffy, James P. Hitler's Secret Pirate Fleet: The Deadliest Ships of World War II. Westport, Conn.: Praeger, 2001.
MLA-čujuhus (9. p.)
Duffy, James P. Hitler's Secret Pirate Fleet: The Deadliest Ships of World War II. Praeger, 2001.
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