Gutherz, Xavier & Cros, Jean-Paul & Lesur, Joséphine: The Discovery of New Rock Paintings in the Horn of Africa: The Rockshelters of Las Geel, Republic of Somaliland. Journal of African Archaeology, 2003, 1. vsk, nro 2. doi:10.3213/1612-1651-10011. Artikkelin verkkoversio. Viitattu 15.2.2020. (englanniksi)
Gutherz, Xavier & Cros, Jean-Paul & Lesur, Joséphine: The Discovery of New Rock Paintings in the Horn of Africa: The Rockshelters of Las Geel, Republic of Somaliland. Journal of African Archaeology, 2003, 1. vsk, nro 2. doi:10.3213/1612-1651-10011. Artikkelin verkkoversio. Viitattu 15.2.2020. (englanniksi)