Não informado. (1968). Modern data products, systems, services. Modern Data Services.
Chicagoスタイル(17版)引用形式Não informado. Modern Data Products, Systems, Services. Framingham, Mass: Modern Data Services, 1968.
MLA(8版)引用形式Não informado. Modern Data Products, Systems, Services. Modern Data Services, 1968.
警告: この引用は必ずしも正確ではありません.