4/28/77 [2]
MLA
United States. Office of the White House Staff Secretary. "4/28/77 [2]." Jimmy Carter Library. 1977-04-28, https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_04.pdf.
APA
United States. Office of the White House Staff Secretary (1977-04-28). 4/28/77 [2]. Retrieved from https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_04.pdf
Chicago
United States. Office of the White House Staff Secretary. "4/28/77 [2]." 1977-04-28. July 6, 2025. https://www.jimmycarterlibrary.gov/digital_library/sso/148878/18/SSO_148878_018_04.pdf.