Summerhill
MLA
Neill, Alexander Sutherland. Summerhill. 2nd ed. Harmondsworth: Penguin books, 1972.
APA
Neill, A. Sutherland. (1972). Summerhill. 2nd ed. Harmondsworth: Penguin books.
Chicago
Neill, Alexander Sutherland, Summerhill. 2nd ed. Harmondsworth: Penguin books, 1972.