Maps.com. (1999). Hypsometric Map Europe Spain. Santa Barbara: Maps.com.
Chicago Style CitationMaps.com. Hypsometric Map Europe Spain. Santa Barbara: Maps.com, 1999.
Cita MLAMaps.com. Hypsometric Map Europe Spain. Santa Barbara: Maps.com, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.