APA

Hemingway E, . (1968). For whom the bell tolls. N. Y: Scribners.

Chicago

Hemingway E, . 1968. For whom the bell tolls. N. Y: Scribners.

Harvard

Hemingway E, . (1968). For whom the bell tolls. N. Y: Scribners.

MLA

Hemingway E, . For whom the bell tolls. N. Y: Scribners. 1968.