Maps.com. (1999). Hypsometric Map Europe Spain. Santa Barbara: Maps.com.
Chicago Style CitationMaps.com. Hypsometric Map Europe Spain. Santa Barbara: Maps.com, 1999.
MLA引文Maps.com. Hypsometric Map Europe Spain. Santa Barbara: Maps.com, 1999.
警告：這些引文格式不一定是100％准確.