อ้างอิง ของ Xmas

  1. Catholic Encyclopedia: Liturgy of the Mass. Retrieved 20 December 2007.
  2. Siegel, Allan M. and William G. Connolly, The New York Times Manual of Style and Usage, Three Rivers Press, 1999, ISBN 9780812963892, pp 66, 365, retrieved via Google Books, December 27, 2008
  3. Griffiths, Emma, "Why get cross about Xmas?", BBC website, December 22, 2004. Retrieved December 28, 2008.
  4. Peters, Pam, "Xmas" article, The Cambridge Guide to Australian English Usage, Cambridge University Press, 2007, ISBN 9780521878210, p 872, retrieved via Google Books, December 27, 2008
  5. Hudson, Robert, "Xmas" article, The Christian Writer's Manual of Style: Updated and Expanded Edition, Zondervan, 2004, ISBN 9780310487715 p 412, retrieved via Google Books, December 27, 2008
  6. "Xmas" article, Merriam-Webster's Dictionary of English Usage, Merriam-Webster, 1994, p 968, ISBN 9780877791324, retrieved via Google Books, December 27, 2008
  7. "The Origin of "Xmas"". CRI/Voice. 2007-12-03. สืบค้นเมื่อ 2009-08-16.