Citazione Stile APA (7a Edizione)
National Research Council (U.S.). Committee on NASA Astronomy Science Centers, National Research Council (U.S.). Space Studies Board, National Research Council (U.S.). Division on Engineering and Physical Sciences, & ebrary, Inc. (2007). Portals to the universe: The NASA astronomy science centers. The National Academies Press.
Citazione stile Chigago Style (17a edizione)
National Research Council (U.S.). Committee on NASA Astronomy Science Centers, National Research Council (U.S.). Space Studies Board, National Research Council (U.S.). Division on Engineering and Physical Sciences, e Inc ebrary. Portals to the Universe: The NASA Astronomy Science Centers. Washington, D.C.: The National Academies Press, 2007.
Citatione MLA (9a ed.)
National Research Council (U.S.). Committee on NASA Astronomy Science Centers, et al. Portals to the Universe: The NASA Astronomy Science Centers. The National Academies Press, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.