TWIST, C. Encyclopedia of science: Fuel and power. Volume IX. Macmillan Publishing Company.
Chicago-viite (17. p.)TWIST, Clint. Encyclopedia of Science: Fuel and Power. Volume IX. Macmillan Publishing Company.
MLA-viite (8. p.)TWIST, Clint. Encyclopedia of Science: Fuel and Power. Volume IX. Macmillan Publishing Company.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.