6/21/1980
MLA
United States. White House Office. Scheduling and Advance Office. "6/21/1980." Jimmy Carter Library. 6/21/1980, https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d062180t.pdf.
APA
United States. White House Office. Scheduling and Advance Office (6/21/1980). 6/21/1980. Retrieved from https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d062180t.pdf
Chicago
United States. White House Office. Scheduling and Advance Office. "6/21/1980." 6/21/1980. June 18, 2025. https://www.jimmycarterlibrary.gov/assets/documents/diary/1980/d062180t.pdf.
