DICKINSON, G. (1970). Maps and air photographs. Edward Arnold.
Cita Chicago (17th ed.)DICKINSON, G.C. Maps and Air Photographs. London: Edward Arnold, 1970.
Cita MLA (9th ed.)DICKINSON, G.C. Maps and Air Photographs. Edward Arnold, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.