CHRISTIE, A. (2002). THE SITTAFORD MYSTERY. HARPERCOLLINS PUBLISHERS.
芝加哥风格引文CHRISTIE, AGATHA. THE SITTAFORD MYSTERY. LONDON: HARPERCOLLINS PUBLISHERS, 2002.
MLA引文CHRISTIE, AGATHA. THE SITTAFORD MYSTERY. HARPERCOLLINS PUBLISHERS, 2002.
警告：这些引文格式不一定是100％准确.