References
- Richmond, Ray; Antonia Coffman (1997). The Simpsons: A Complete Guide to our Favorite Family. Harper Collins Publishers. pp. 14–15. ISBN 0-00-638898-1.
- Martyn, Warren; Adrian Wood (2000). I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide. Virgin Books. ISBN 978-0-7535-0495-6.
Read more about this topic: The Simpsons (season 2)