Schilling, Steve P.; Carrara, Paul E.; Thompson, Ren A.; Iwatsubo, Eugene Y. (2004). „Posteruption glacier development within the crater of Mount St. Helens, Washington, USA”. Quaternary Research. Elsevier Science (USA). 61 (3): 325—329. Bibcode:2004QuRes..61..325S. S2CID128528280. doi:10.1016/j.yqres.2003.11.002.
Schilling, Steve P.; Carrara, Paul E.; Thompson, Ren A.; Iwatsubo, Eugene Y. (2004). „Posteruption glacier development within the crater of Mount St. Helens, Washington, USA”. Quaternary Research. Elsevier Science (USA). 61 (3): 325—329. Bibcode:2004QuRes..61..325S. S2CID128528280. doi:10.1016/j.yqres.2003.11.002.
Haugerud, R.A.; Harding, D.J.; Mark, L.E.; Zeigler, J.; Queija, V.; Johnson, S.Y. (децембар 2004). Lidar measurement of topographic change during the 2004 eruption of Mount St. Helens, WA. American Geophysical Union, Fall Meeting. 53. стр. 1. Bibcode:2004AGUFM.V53D..01H.CS1 одржавање: Формат датума (веза)
Schilling, Steve P.; Carrara, Paul E.; Thompson, Ren A.; Iwatsubo, Eugene Y. (2004). „Posteruption glacier development within the crater of Mount St. Helens, Washington, USA”. Quaternary Research. Elsevier Science (USA). 61 (3): 325—329. Bibcode:2004QuRes..61..325S. S2CID128528280. doi:10.1016/j.yqres.2003.11.002.
Tilling, Robert I; Topinka, Lyn; Swanson, Donald A (1990). „Impact and Aftermath”. Eruptions of Mount St. Helens: Past, Present, and Future. 1.01. USGS.
Schilling, Steve P.; Ramsey, David W.; Messerich, James A.; Thompson, Ren A. (2006-08-08). „Rebuilding Mount St. Helens”. USGS Scientific Investigations Map 2928. Приступљено 2007-03-07.