Frier, J. D. (1933). Aero engines: An elementary treatise ... ... ... C. Griffin & Company, limited.
Chicago-viite (17. p.)Frier, John Drummond. Aero Engines: An Elementary Treatise ... ... ... London,: C. Griffin & Company, limited, 1933.
MLA-viite (8. p.)Frier, John Drummond. Aero Engines: An Elementary Treatise ... ... ... C. Griffin & Company, limited, 1933.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.