Oleson, T. J. (1963). Early voyages and northern approaches 1000-1632. McClelland and Stewart.
Lua i Stíl Chicago (17ú heag.)Oleson, Tyggvi J. Early Voyages and Northern Approaches 1000-1632. [Toronto]: McClelland and Stewart, 1963.
Lua MLA (9ú heag.)Oleson, Tyggvi J. Early Voyages and Northern Approaches 1000-1632. McClelland and Stewart, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.