Citazione Stile APA (7a Edizione)
National Research Council (U.S.). Space Studies Board & ebrary, Inc. (2008). Opening new frontiers in space: Choices for the next new frontiers : announcement of opportunity. National Academies Press.
Citazione stile Chigago Style (17a edizione)
National Research Council (U.S.). Space Studies Board e Inc ebrary. Opening New Frontiers in Space: Choices for the Next New Frontiers : Announcement of Opportunity. Washington: National Academies Press, 2008.
Citatione MLA (9a ed.)
National Research Council (U.S.). Space Studies Board e Inc ebrary. Opening New Frontiers in Space: Choices for the Next New Frontiers : Announcement of Opportunity. National Academies Press, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.