Madole, Richard F.; Bradley, William C.; Loewenherz, Deborah S.; Ritter, Dale F.; Rutter, Nathaniel W.; Thorn, Colin E. Rocky Mountains. Graf, William L. (编). Geomorphic Systems of North America. Boulder, Colorado 80301: Geological Society of America. 1987: 211–257 [2022-01-30]. ISBN 978-0-8137-5302-7. doi:10.1130/dnag-cent-v2.211. (原始内容存档于2018-06-02) (英语).
geoscienceworld.org
pubs.geoscienceworld.org
Madole, Richard F.; Bradley, William C.; Loewenherz, Deborah S.; Ritter, Dale F.; Rutter, Nathaniel W.; Thorn, Colin E. Rocky Mountains. Graf, William L. (编). Geomorphic Systems of North America. Boulder, Colorado 80301: Geological Society of America. 1987: 211–257 [2022-01-30]. ISBN 978-0-8137-5302-7. doi:10.1130/dnag-cent-v2.211. (原始内容存档于2018-06-02) (英语).
Madole, Richard F.; Bradley, William C.; Loewenherz, Deborah S.; Ritter, Dale F.; Rutter, Nathaniel W.; Thorn, Colin E. Rocky Mountains. Graf, William L. (编). Geomorphic Systems of North America. Boulder, Colorado 80301: Geological Society of America. 1987: 211–257 [2022-01-30]. ISBN 978-0-8137-5302-7. doi:10.1130/dnag-cent-v2.211. (原始内容存档于2018-06-02) (英语).