Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

National Research Council (U.S.). Space Studies Board και Inc ebrary. Opening New Frontiers in Space: Choices for the Next New Frontiers : Announcement of Opportunity. Washington: National Academies Press, 2008.

Παραπομπή σε μορφή MLA (9th εκδ.)

National Research Council (U.S.). Space Studies Board και Inc ebrary. Opening New Frontiers in Space: Choices for the Next New Frontiers : Announcement of Opportunity. National Academies Press, 2008.