(1999). Journal Of Professional Issues In Engineering Education And Practice. s.n.
Chicago-viite (17. p.)Journal Of Professional Issues In Engineering Education And Practice. s.n, 1999.
MLA-viite (8. p.)Journal Of Professional Issues In Engineering Education And Practice. s.n, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.