Webb, R. L. (1988). On the Northwest: Commercial whaling in the Pacific Northwest, 1790-1967. University of British Columbia Press.
Chicago-referens (17:e uppl.)Webb, Robert Lloyd. On the Northwest: Commercial Whaling in the Pacific Northwest, 1790-1967. Vancouver: University of British Columbia Press, 1988.
MLA-referens (9:e uppl.)Webb, Robert Lloyd. On the Northwest: Commercial Whaling in the Pacific Northwest, 1790-1967. University of British Columbia Press, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.