Cita APA (7th ed.)

Keefe, E. K. (1974). Area handbook for Belgium. U.S. Government Printing Office.

Cita Chicago (17th ed.)

Keefe, Eugene K. Area Handbook for Belgium. Washington, D.C: U.S. Government Printing Office, 1974.

Cita MLA (9th ed.)

Keefe, Eugene K. Area Handbook for Belgium. U.S. Government Printing Office, 1974.