Womack, J. P. (1990). The Machine that Changed the World. Rawson Associates.
Chicago-viite (17. p.)Womack, James P. The Machine That Changed the World. Rawson Associates, 1990.
MLA-viite (9. p.)Womack, James P. The Machine That Changed the World. Rawson Associates, 1990.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.