Citazione Stile APA (7a Edizione)

Barnes, W., & Morgan, J. H. (1961). The Foreign Service of the United States: Origins, development and functions. Historical Office, Bureau of Public Affairs, Dept. of State.

Citazione stile Chigago Style (17a edizione)

Barnes, William, e John Heath Morgan. The Foreign Service of the United States: Origins, Development and Functions. [Washington: Historical Office, Bureau of Public Affairs, Dept. of State, 1961.

Citatione MLA (8a ed.)

Barnes, William, e John Heath Morgan. The Foreign Service of the United States: Origins, Development and Functions. Historical Office, Bureau of Public Affairs, Dept. of State, 1961.