I have found these books useful and inspiring in my efforts to put reading workshops into practice in my classroom.

• Still Learning to Read: Teaching Students in Grades 3-6, by Franki Sibberson, Karen Szymusiak 
• The Art of Teaching Reading, by Lucy McCormick Calkins
• On Solid Ground : Strategies for Teaching Reading K-3, by Sharon Taberski
• Beyond Leveled Books: Supporting Transitional Readers in Grades 2-5, by Karen Szymusiak, Franki Sibberson
• Reconsidering Read-Aloud, by Mary Lee Hahn
• Around the Reading Workshop in 180 Days: A Month-by-Month Guide to Effective Instruction, by Frank Serafini, Suzette Serafini-Youngs
• The Reading Workshop: Creating Space for Readers, by Frank Serafini
• Revisiting The Reading Workshop: Management, Mini-Lessons, & Strategies, by Barbara Orehove, Marybeth Alley
• The Reading Zone: How to Help Kids Become Skilled, Passionate, Habitual, Critical Readers, by Nancie Atwell
• What Really Matters for Struggling Readers: Designing Research-Based Programs, by by Richard L. Allington