7Dorothy L. Sayers, " An Introduction to The Omnibus of Crime", Dorothy L. Sayers ed. (Payson and Clarke Ltd.,1929), p. 45.
8Jacques Barzun ,"Detection and the Literary Art" ,in The Mystery Writers Art, Francis M. Nevim, Jr. ed. (Bowling Green: Bowling Green University Popular Press, 1970), p. 249.
9William Harmon et al. eds., A Handbook to Literature,Seventh Edition (Upper Saddle River, New Jersey: PrenticeHall), p. 333.
10Tzvetan Todorov, The Poetics of Prose, R. Howard trans.(Oxford: Basil Blackwell, 1977), pp. 44-46.