APA

ORWELL G., . (1990). Nineteen eighty-four. London [etc.]: .

Chicago

ORWELL George, . 1990. Nineteen eighty-four. London [etc.]: .

Harvard

ORWELL G., . (1990). Nineteen eighty-four. London [etc.]: .

MLA

ORWELL George, . Nineteen eighty-four. London [etc.]: . 1990.