Carroll Roopam. Sammy The Snail. National Book Trust.
Cita Chicago (17th ed.)Carroll Roopam. Sammy The Snail. 2012 2012: National Book Trust.
Cita MLA (9th ed.)Carroll Roopam. Sammy The Snail. National Book Trust.
Atenció: Aquestes cites poden no estar 100% correctes.