Não informado. Air Force Research Resumes. Air Force, Office of Aerospace Research.
Chicago-viite (17. p.)Não informado. Air Force Research Resumes. Washington: Air Force, Office of Aerospace Research.
MLA-viite (8. p.)Não informado. Air Force Research Resumes. Air Force, Office of Aerospace Research.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.