Berry, A. (1950). The next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square.
Παραπομπή Chicago StyleBerry, Adrian. The Next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square, 1950.
Παραπομπή MLABerry, Adrian. The Next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square, 1950.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.