APA način citiranja (7. izdanje)
(1987). Into the Unknown: The story of Exploration (ed.). National Geographical society.
Čikaški stil citiranja (17. izdanje)
Into the Unknown: The Story of Exploration. ed. Washington: National Geographical society, 1987.
MLA način citiranja (9. izdanje)
Into the Unknown: The Story of Exploration. ed. National Geographical society, 1987.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.