Cita APA (7th ed.)

Lewis, P. (1977). MAPS AND STATISTICS. Metbuen & Co Ltd.

Cita Chicago (17th ed.)

Lewis, Peter. MAPS AND STATISTICS. UK: Metbuen & Co Ltd, 1977.

Cita MLA (9th ed.)

Lewis, Peter. MAPS AND STATISTICS. Metbuen & Co Ltd, 1977.

Atenció: Aquestes cites poden no estar 100% correctes.