Title: The Oxford Dictionary of Nursery Rhymes / Edition 2, Author: Iona Opie
Title: Child Life, Author: John Greenleaf Whittier
Title: Memory in Oral Traditions: The Cognitive Psychology of Epic, Ballads, and Counting-out Rhymes, Author: David C. Rubin
Title: From Tongue to Text: A New Reading of Children's Poetry, Author: Debbie Pullinger
Title: Ballads for Little Folk, Author: Alice Cary