Eayrs, J. (1961). Northern approaches: Canada and the search for peace. Macmillan Co. of Canada.
Lua i Stíl Chicago (17ú heag.)Eayrs, James. Northern Approaches: Canada and the Search for Peace. Toronto: Macmillan Co. of Canada, 1961.
Lua MLA (9ú heag.)Eayrs, James. Northern Approaches: Canada and the Search for Peace. Macmillan Co. of Canada, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.