APA Style

Christie, A, 1., Suwarni, A. (2002). Pena Beracun . : PT. Gramedia Pustaka Utama.

MLA Style

Christie, Agatha,, 1890-1976., Suwarni, A.S.. "Pena Beracun". : PT. Gramedia Pustaka Utama, 2002. Text.