Troughton, M. J. (1979). An atlas of Canadian agriculture: Portfolio of maps based on the 1971 census of agriculture. Univ. of Western Ontario.
Chicago-Zitierstil (17. Ausg.)Troughton, Michael J. An Atlas of Canadian Agriculture: Portfolio of Maps Based on the 1971 Census of Agriculture. London, Ont: Univ. of Western Ontario, 1979.
MLA-Zitierstil (9. Ausg.)Troughton, Michael J. An Atlas of Canadian Agriculture: Portfolio of Maps Based on the 1971 Census of Agriculture. Univ. of Western Ontario, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.