APA (7e ed.) Bronvermelding

Clark, F. J. (1972). Business systems and data processing procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Clark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Englewood Cliffs, N. J: Prentice-Hall, 1972.

MLA (9e ed.) Bronvermelding

Clark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall, 1972.