Não informado. (1969). Journal of Quality Technology. American Society for Quality Control.
Chicago-viite (17. p.)Não informado. Journal of Quality Technology. Milwaukee, Wis: American Society for Quality Control, 1969.
MLA-viite (8. p.)Não informado. Journal of Quality Technology. American Society for Quality Control, 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.