A tiny publishing house so exclusive that it doesn’t sell its books through stores is taking aim at Internet giant Amazon.com, saying the cyberspace retailer is misleading customers and damaging the plaintiff’s book sales.

The Toby Press, which has offices in London and Brookfield, Conn., filed a lawsuit in U.S. District Court in Pittsburgh earlier this month demanding that Amazon.com provide its customers with a link to the Toby Press site, www.tobypress.com.