Los que te recomiendo, los puedes comprar vía Amazon:

Information Architecture for the World Wide Web: Designing Large-Scale Web Sites
http://www.amazon.com/Information-Architecture-World-Wide-Web/dp/0596527349/ref=sr_1_1?ie=UTF8&s=books&qid=1272857523&sr=1-1

Web 2.0 Architectures: What Entrepreneurs and Information Architects Need to Know
http://www.amazon.com/Web-2-0-Architectures-Entrepreneurs-Information/dp/0596514433/ref=sr_1_7?ie=UTF8&s=books&qid=1272857523&sr=1-7

Communicating Design: Developing Web Site Documentation for Design and Planning
http://www.amazon.com/Communicating-Design-Developing-Documentation-Planning/dp/0321392353/ref=sr_1_9?ie=UTF8&s=books&qid=1272857523&sr=1-9

Designing Web Navigation: Optimizing the User Experience
http://www.amazon.com/Designing-Web-Navigation-Optimizing-Experience/dp/0596528108/ref=sr_1_12?ie=UTF8&s=books&qid=1272857523&sr=1-12