(1986). Orbital flight simulation utility software unit specifications (revision 1) / prepared by S.W. Wilson.
Chicago-viite (17. p.)Orbital Flight Simulation Utility Software Unit Specifications (revision 1) / Prepared by S.W. Wilson. 1986.
MLA-viite (9. p.)Orbital Flight Simulation Utility Software Unit Specifications (revision 1) / Prepared by S.W. Wilson. 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.