Harrison, A. A. (2002). Spacefaring: The human dimension. University of California Press.
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Dyfyniad Arddull Chicago
Harrison, Albert A. Spacefaring: The Human Dimension. Berkeley, Calif. ; London: University of California Press, 2002.
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Dyfyniad MLA
Harrison, Albert A. Spacefaring: The Human Dimension. University of California Press, 2002.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.