Ross, J. E. R. (1930). Triangulation closure in the Maritime Provinces: Latitude and longitude nomograms. Department of the Interior.
Citazione stile Chigago Style (17a edizione)Ross, J E R. Triangulation Closure in the Maritime Provinces: Latitude and Longitude Nomograms. Ottawa, Canada: Department of the Interior, 1930.
Citatione MLA (8a ed.)Ross, J E R. Triangulation Closure in the Maritime Provinces: Latitude and Longitude Nomograms. Department of the Interior, 1930.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.