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.
Lua i Stíl Chicago (17ú heag.)United States. Dept. of State, Lee H. Burke, Jan K. Herman, agus Richard Sharpe Patterson. The Secretaries of State: Portraits and Biographical Sketches. [Washington]: Office of Public Communication, Bureau of Public Affairs, 1978.
Lua MLA (8ú heag.)United States. Dept. of State, et al. The Secretaries of State: Portraits and Biographical Sketches. Office of Public Communication, Bureau of Public Affairs, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.