Chicago
Memorandum
https://www.govinfo.gov/app/details/USREPORTS-187/USREPORTS-187-FrontMatter-4.
APA
Memorandum
https://www.govinfo.gov/app/details/USREPORTS-187/USREPORTS-187-FrontMatter-4.
MLA
Memorandum.
https://www.govinfo.gov/app/details/USREPORTS-187/USREPORTS-187-FrontMatter-4.
Bluebook
Memorandum.