Gaya APA

Christie, A. (2007). Poirot's Early Cases: Kasus-Kasus Perdana Poirot . JAKARTA: PT. Gramedia Pustaka Utama.

Gaya MLA

Christie, Agatha. "Poirot's Early Cases: Kasus-Kasus Perdana Poirot". JAKARTA: PT. Gramedia Pustaka Utama, 2007. Fiction.