Ramsey, R. W. (1968). Some keys to the Vietnam puzzle. s.n.
Chicagoスタイル(17版)引用形式Ramsey, Russell W. Some Keys to the Vietnam Puzzle. Gainesville, Fla: s.n, 1968.
MLA(9版)引用形式Ramsey, Russell W. Some Keys to the Vietnam Puzzle. s.n, 1968.
警告: この引用は必ずしも正確ではありません.