Dyfyniad APA

Berry, A. (1950). The next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square.

Dyfyniad Arddull Chicago

Berry, Adrian. The Next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square, 1950.

Dyfyniad MLA

Berry, Adrian. The Next Ten Thousand Years: A Vision of Man's Future in the Universe. London: Jonathan Capethirty Bedford Square, 1950.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.