internet, or from a company, etc? im so confused. i need to know if a u.s geological survey is a source and need to know that if it is linked with the internet, books, and other sources. i need to know if it is a seperate source on its own. guys im researching volcanoes, and i need to find sources other than books, websites, and newspaper articles, so if there is another source relating to it, please tell me! i have heard of the Cascade.. (forgot the name) and i am also not sure it is a seperate source. please! i need help! thank you