APA (7th ed.) Citation

The United States Executive Branch: A biographical directory of heads of state and cabinet officials (1. publ.). Greenwood Press.

Chicago Style (17th ed.) Citation

The United States Executive Branch: A Biographical Directory of Heads of State and Cabinet Officials. 1. publ. Westport, Conn. [u.a.]: Greenwood Press.

MLA (9th ed.) Citation

The United States Executive Branch: A Biographical Directory of Heads of State and Cabinet Officials. 1. publ. Greenwood Press.

Warning: These citations may not always be 100% accurate.