APA

Twain M., . (1991). Tom Sawyer and Huckleberry Finn. London: .

Chicago

Twain M, . 1991. Tom Sawyer and Huckleberry Finn. London: .

Harvard

Twain M., . (1991). Tom Sawyer and Huckleberry Finn. London: .

MLA

Twain M, . Tom Sawyer and Huckleberry Finn. London: . 1991.