United States. Dept. of State, Burke, L. H., Herman, J. K., & Patterson, R. S. (1978). The Secretaries of State: Portraits and biographical sketches. Office of Public Communication, Bureau of Public Affairs.
Chicago-referens (17:e uppl.)United States. Dept. of State, Lee H. Burke, Jan K. Herman, och Richard Sharpe Patterson. The Secretaries of State: Portraits and Biographical Sketches. [Washington]: Office of Public Communication, Bureau of Public Affairs, 1978.
MLA-referens (8:e uppl.)United States. Dept. of State, et al. The Secretaries of State: Portraits and Biographical Sketches. Office of Public Communication, Bureau of Public Affairs, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.