APA

Lee H., . (1999). To kill a mockingbird. new york: harpercollins.

Chicago

Lee Harper, . 1999. To kill a mockingbird. new york: harpercollins.

Harvard

Lee H., . (1999). To kill a mockingbird. new york: harpercollins.

MLA

Lee Harper, . To kill a mockingbird. new york: harpercollins. 1999.