(1969). Alan Jackson, Jeff Nuttall. penguin.
Cita Chicago (17th ed.)Alan Jackson, Jeff Nuttall. Harmondsworth: penguin, 1969.
Cita MLA (9th ed.)Alan Jackson, Jeff Nuttall. penguin, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)