Ross, J. E. R. (1930). Triangulation closure in the Maritime Provinces: Latitude and longitude nomograms. Department of the Interior.
Cita Chicago (17th ed.)Ross, J E R. Triangulation Closure in the Maritime Provinces: Latitude and Longitude Nomograms. Ottawa, Canada: Department of the Interior, 1930.
Cita MLA (8th ed.)Ross, J E R. Triangulation Closure in the Maritime Provinces: Latitude and Longitude Nomograms. Department of the Interior, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.