(EN) Alastair Bonnett, Bir Tawil, in Unruly Places: Lost Spaces, Secret Cities and Other Inscrutable Geographies, Houghton Mifflin Harcourt, 2014, p. 73, ISBN 978-0-544-10160-9, LCCN 2013050983, OCLC 890509603.
«the only place on the planet that is both habitable and unclaimed.»
