4/21/1979
MLA
United States. White House Office. Scheduling and Advance Office. "4/21/1979." Jimmy Carter Library. 4/21/1979, https://www.jimmycarterlibrary.gov/assets/documents/diary/1979/d042179t.pdf.
APA
United States. White House Office. Scheduling and Advance Office (4/21/1979). 4/21/1979. Retrieved from https://www.jimmycarterlibrary.gov/assets/documents/diary/1979/d042179t.pdf
Chicago
United States. White House Office. Scheduling and Advance Office. "4/21/1979." 4/21/1979. April 29, 2026. https://www.jimmycarterlibrary.gov/assets/documents/diary/1979/d042179t.pdf.
