APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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