Não informado. (1969). Data base. Association for Computing Machinery, Special Interest Group on Business Data Processing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Data Base. New York: Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Data Base. Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.