Clark, F. J. (1972). Business systems and data processing procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall.
Citace podle Chicago (17th ed.)Clark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Englewood Cliffs, N. J: Prentice-Hall, 1972.
Citace podle MLA (9th ed.)Clark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall, 1972.
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