• Weakly Differentiable Functions, Graduate Texts in Mathematics, Springer-Verlag, 1989

• Modern Real Analysis, (with Ronald Gariepy), Brooks-Cole Publishing Inc., 1995.

• Fine Regularity of Solutions of Elliptic Partial Differential Equations, (with Jan Maly), Mathematical Surveys and Monographs, Vol. 51, 1997, American Mathematical Society.