Tham khảo Xenology

  1. Henry George Liddell, Robert Scott, A Greek-English Lexicon, new (ninth) edition, with a supplement, Clarendon Press, Oxford, 1968.
  2. Brian M. Stableford, Science Fact and Science Fiction: An Encyclopedia, Routledge, 2006, p. 571.
  3. Science Fact and Science Fiction: An Encyclopedia, p. 571.
  4. Arkady Strugatsky; Boris Strugatsky (ngày 16 tháng 9 năm 2016). Roadside Picnic. Lulu.com. tr. 92–. ISBN 978-1-365-40085-8.
  5. Wilhelm Halbfass, Indien und Europa, Perspektiven ihrer geistigen Begegnung, Schwabe Verlag, Basel and Stuttgart, 1981.
  6. Dermot Killingley, "Mlecchas, Yavanas and Heathens: Interacting Xenologies in Early Nineteenth-Century Calcutta," in Beyond Orientalism: The Work of Wilhelm Halbfass and its Impact on Indian and Cross-cultural Studies, ed. Eli Franco, Karin Preisendanz, Editions Rodopi, Amsterdam, 2007.
  7. Harvey P. Alper, review of Indien und Europa, Perspektiven ihrer geistigen Begegnung, in Philosophy East and West, Vol. 33, No. 2 (April, 1983), pp. 189-196
  8. "Naming extraterrestrial life," Nature 301(ngày 13 tháng 1 năm 1983):106 http://www.nature.com/nature/journal/v301/n5896/full/301106a0.html
  9. "Naming extraterrestrial life," Correspondence to Nature Vol. 301(13), ngày 13 tháng 1 năm 1983, p 106. http://www.rfreitas.com/Astro/NamingETL.htm