American Management Association. Manufacturing Division. (1965). Systems contracting. s.n.
Chicagoスタイル(17版)引用形式American Management Association. Manufacturing Division. Systems Contracting. New York: s.n, 1965.
MLA(9版)引用形式American Management Association. Manufacturing Division. Systems Contracting. s.n, 1965.
警告: この引用は必ずしも正確ではありません.