Dikinson, G. C. (1969). Maps and air photographs. Arnold.
Cita Chicago (17th ed.)Dikinson, G. C. Maps and Air Photographs. London: Arnold, 1969.
Cita MLA (9th ed.)Dikinson, G. C. Maps and Air Photographs. Arnold, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.