For students seeking additional practice in calculus beyond the Larson 8th edition textbook, several resources are recommended. Libraries offer various calculus texts, including those by Edwards & Penney, Stewart, Courant & Robbins, Hardy, and Thomas, which contain challenging problems. The Schaum's Outline series provides accessible options with a focus on solved problems. MIT's OpenCourseWare offers supplementary problems that can enhance understanding. Additionally, exploring classic texts like Demidovich's book may yield valuable practice, although availability might be limited. For extensive problem sets, consider acquiring comprehensive problem books to further challenge skills.