APA

Heming Way E., . (1967). For whom The Bell Tolls. London: Penguin books.

Chicago

Heming Way Ernest, . 1967. For whom The Bell Tolls. London: Penguin books.

Harvard

Heming Way E., . (1967). For whom The Bell Tolls. London: Penguin books.

MLA

Heming Way Ernest, . For whom The Bell Tolls. London: Penguin books. 1967.