Bolster, W. J. (1997). Black jacks: African American seamen in the age of sail. Harvard University Press.
Chicago-čujuhus (17. p.)Bolster, W. Jeffrey. Black Jacks: African American Seamen in the Age of Sail. Cambridge, MA: Harvard University Press, 1997.
MLA-čujuhus (9. p.)Bolster, W. Jeffrey. Black Jacks: African American Seamen in the Age of Sail. Harvard University Press, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.