6/20/77 [1]
MLA
United States. Office of the White House Staff Secretary. "6/20/77 [1]." Jimmy Carter Library. 1977-06-20, https://www.jimmycarterlibrary.gov/digital_library/sso/148878/26/SSO_148878_026_05.pdf.
APA
United States. Office of the White House Staff Secretary (1977-06-20). 6/20/77 [1]. Retrieved from https://www.jimmycarterlibrary.gov/digital_library/sso/148878/26/SSO_148878_026_05.pdf
Chicago
United States. Office of the White House Staff Secretary. "6/20/77 [1]." 1977-06-20. July 7, 2025. https://www.jimmycarterlibrary.gov/digital_library/sso/148878/26/SSO_148878_026_05.pdf.