Παπαγιάννης, Μ. Δ. (1985). The search for extraterrestrial life: Recent developments : proceedings of the 112th symposium of the International Astronomical Union held at Boston University, Boston, Mass., USA, June 18-21, 1984. Dordrecht: D. Reidel Publishing Company.
Παραπομπή Chicago StyleΠαπαγιάννης, Μιχαήλ Δ. The Search for Extraterrestrial Life: Recent Developments : Proceedings of the 112th Symposium of the International Astronomical Union Held At Boston University, Boston, Mass., USA, June 18-21, 1984. Dordrecht: D. Reidel Publishing Company, 1985.
Παραπομπή MLAΠαπαγιάννης, Μιχαήλ Δ. The Search for Extraterrestrial Life: Recent Developments : Proceedings of the 112th Symposium of the International Astronomical Union Held At Boston University, Boston, Mass., USA, June 18-21, 1984. Dordrecht: D. Reidel Publishing Company, 1985.