Schulz, David. "Carolene Products Footnote Four". The First Amendment Encyclopedia presented by the John Seigenthaler Chair of Excellence in First Amendment Studies. Archived from the original on April 8, 2020. Retrieved August 2, 2020.
Schulz, David. "Carolene Products Footnote Four". The First Amendment Encyclopedia presented by the John Seigenthaler Chair of Excellence in First Amendment Studies. Archived from the original on April 8, 2020. Retrieved August 2, 2020.