Cheryl Ma Erwin Books

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About Cheryl Ma Erwin Books

Jane Nelsen, Ed.D., coauthor of the bestselling Positive Discipline series, is a licensed marriage, family, and child therapist and an internationally-known speaker. Her books have sold more than two million copies. Cheryl Erwin, M.A., was a licensed marriage and family therapist in Reno, Nevada, for more than twenty-five years. She is the author or coauthor of several books and manuals on parenting and family life, and she is a popular international speaker and trainer. Roslyn Ann Duffy founded and codirected The Learning Tree Montessori Childcare and has written adult and children's texts, as well as the internationally circulated column "From A Parent's Perspective." She is a parent to four and besotted grandma to three, and lives in Seattle, Washington.