- eBookMust Know High School AlgebraChristopher Monahan
- eBookPractice Makes Perfect Algebra II Review and Workbook, Second EditionChristopher Monahan
- eBookThe Everything Guide to AlgebraChristopher Monahan
- eBookMust Know High School Algebra, Second EditionChristopher Monahan
- eBookMust Know High School Pre-CalculusChristopher Monahan
- eBookThe Everything Everyday Math BookChristopher Monahan
- eBookPractice Makes PerfectChristopher Monahan
- eBookPractice Makes Perfect Algebra IIChristopher Monahan