Não informado. Power and Fluids. Worthington Corporation.
Chicago-viite (17. p.)Não informado. Power and Fluids. Harrison, NY: Worthington Corporation.
MLA-viite (8. p.)Não informado. Power and Fluids. Worthington Corporation.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.