Napolitano, L. G. (1977). Space and energy: Proceedings of the XXVIth International Astronautical Congress, Lisbon, 21-27 September, 1975. Oxford ; New York: Pergamon Press.
Παραπομπή Chicago StyleNapolitano, Luigi G. Space and Energy: Proceedings of the XXVIth International Astronautical Congress, Lisbon, 21-27 September, 1975. Oxford ; New York: Pergamon Press, 1977.
Παραπομπή MLANapolitano, Luigi G. Space and Energy: Proceedings of the XXVIth International Astronautical Congress, Lisbon, 21-27 September, 1975. Oxford ; New York: Pergamon Press, 1977.
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