Não informado. (1987). High technology business. Infotechnology Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. High Technology Business. Boston, Mass: Infotechnology Publishing, 1987.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. High Technology Business. Infotechnology Publishing, 1987.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.