Cita APA

USA Department of State. (1990). Foreign relations of the United States: 1955/57,25 Eastern Europe. Foreign relations of the United States.

Citación estilo Chicago

USA Department of State. "Foreign Relations of the United States: 1955/57,25 Eastern Europe." Foreign Relations of the United States 1990.

Cita MLA

USA Department of State. "Foreign Relations of the United States: 1955/57,25 Eastern Europe." Foreign Relations of the United States, 1990.