Cita APA

USA Department of State. (2002). Foreign relations of the United States: 1964/68,6 Vietnam January - August 1968. Foreign relations of the United States.

Citación estilo Chicago

USA Department of State. "Foreign Relations of the United States: 1964/68,6 Vietnam January - August 1968." Foreign Relations of the United States 2002.

Cita MLA

USA Department of State. "Foreign Relations of the United States: 1964/68,6 Vietnam January - August 1968." Foreign Relations of the United States, 2002.