Item Response Theory: Parameter Estimation Techniques, Second Edition (Statistics:  A Series of Textbooks and Monographs)
…an excellent resource for the serious investigator doing research involving estimation of IRT model parameters.-Journal of the American Statistical Association…Baker has the unique ability to present complex material in a form that is easily understood….This book belongs on the bookshelf of every advanced student in psychometrics. It should also prove invaluable to students in statistics.-Journal of Educational Measurement