APA

Portis C., . (1968). True grit: a novel. New York: Simon and Schuster.

Chicago

Portis Charles, . 1968. True grit: a novel. New York: Simon and Schuster.

Harvard

Portis C., . (1968). True grit: a novel. New York: Simon and Schuster.

MLA

Portis Charles, . True grit: a novel. New York: Simon and Schuster. 1968.