4/30/77
MLA
United States. Office of the White House Staff Secretary. "4/30/77." Jimmy Carter Library. 1977-04-30, https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_06.pdf.
APA
United States. Office of the White House Staff Secretary (1977-04-30). 4/30/77. Retrieved from https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_06.pdf
Chicago
United States. Office of the White House Staff Secretary. "4/30/77." 1977-04-30. July 6, 2025. https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_06.pdf.