Columbia subject headings:
United States--Armed Forces--History--Vietnam War, 1961-1975.
Vietnam (Republic). Quân lực--History--Vietnam War, 1961-1975.
Vietnam War, 1961-1975.
Harvard subject headings:
United States--Armed Forces--History--Vietnam War, 1961-1975.
Vietnam (Republic). Quân lực--History--Vietnam War, 1961-1975.
Vietnam War, 1961-1975.
Princeton subject headings:
United States--Armed Forces--History--Vietnamese Conflict, 1961 1975.
Vietnam War, 1961-1975.
Vietnam. Quân Lưc--History--Vietnamese Conflict, 1961-1975.