Middle class.

The Income of the Chinese gentry. by: (書目-語言資料,印刷品)

Transforming the Cultural Economy for Little Readers: Print-Based Adaptations for Children in Nineteenth-Century America. by: (書目-電子資源)

"It's Almost Like You're Learning through Cooking": A Conversation Analytic Study of Parent-Child Number Talk during an Early Math Intervention. by: (書目-電子資源)