Frump, R. (2003). Until the sea shall free them: Life, death, and survival in the Merchant Marine. Arrow Books.
Citazione stile Chigago Style (17a edizione)Frump, Robert. Until the Sea Shall Free Them: Life, Death, and Survival in the Merchant Marine. United Kingdom: Arrow Books, 2003.
Citatione MLA (9a ed.)Frump, Robert. Until the Sea Shall Free Them: Life, Death, and Survival in the Merchant Marine. Arrow Books, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.