4/20/1980
MLA
United States. White House Office. Scheduling and Advance Office. "4/20/1980." Jimmy Carter Library. 4/20/1980, https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d042080t.pdf.
APA
United States. White House Office. Scheduling and Advance Office (4/20/1980). 4/20/1980. Retrieved from https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d042080t.pdf
Chicago
United States. White House Office. Scheduling and Advance Office. "4/20/1980." 4/20/1980. July 27, 2025. https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d042080t.pdf.
