Keates, J. (1973). CARTOGRAPHIC DESIGN AND PRODUCTION. LONGMAN GROUP LIMITED.
Cita Chicago (17th ed.)Keates, J.S. CARTOGRAPHIC DESIGN AND PRODUCTION. London: LONGMAN GROUP LIMITED, 1973.
Cita MLA (9th ed.)Keates, J.S. CARTOGRAPHIC DESIGN AND PRODUCTION. LONGMAN GROUP LIMITED, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.