Dyfyniad APA
Freeman, H. R., & Longanecker, G. W. (1979). The International Ultraviolet Explorer: Case study in spacecraft design. Goddard Space Flight Center.
Dyfyniad Arddull Chicago
Freeman, H. R., and G. W. Longanecker. The International Ultraviolet Explorer: Case Study in Spacecraft Design. Greenbelt, Md.: Goddard Space Flight Center, 1979.
Dyfyniad MLA
Freeman, H. R., and G. W. Longanecker. The International Ultraviolet Explorer: Case Study in Spacecraft Design. Goddard Space Flight Center, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.