Goodson, J., & Morris, J. A. (1971). The new contour dictionary: A short text-book on contour reading with map exercises. George G.Harrap.
Citazione stile Chigago Style (17a edizione)Goodson, J.B, e J. A. Morris. The New Contour Dictionary: A Short Text-book on Contour Reading with Map Exercises. London: George G.Harrap, 1971.
Citatione MLA (9a ed.)Goodson, J.B, e J. A. Morris. The New Contour Dictionary: A Short Text-book on Contour Reading with Map Exercises. George G.Harrap, 1971.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.