Christie, A. (1969). Hallowe'en party. Published for the Crime Club by Collins.
Citazione stile Chigago Style (17a edizione)Christie, Agatha. Hallowe'en Party. London: Published for the Crime Club by Collins, 1969.
Citatione MLA (8a ed.)Christie, Agatha. Hallowe'en Party. Published for the Crime Club by Collins, 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.