The Permanente Federation LLC was formed under the laws of the State of Delaware on January 8, 1997. Delaware business entity number 2704178. The entity is registered with the California Secretary of State. Retrieved February 4, 2020.
"Kaiser workers on strike". Roseville Press-Tribune. thepresstribune.com. January 31, 2012. Archived from the original on November 6, 2014. Retrieved May 18, 2024.
"Kaiser workers on strike". Roseville Press-Tribune. thepresstribune.com. January 31, 2012. Archived from the original on November 6, 2014. Retrieved May 18, 2024.