Christie, A. (1986). Why didn't they ask Evans? Fontana, Collins.
Chicago-Zitierstil (17. Ausg.)Christie, Agatha. Why Didn't They Ask Evans? Glasgow: Fontana, Collins, 1986.
MLA-Zitierstil (8. Ausg.)Christie, Agatha. Why Didn't They Ask Evans? Fontana, Collins, 1986.
警告：这些引文格式不一定是100％准确.