：2020年1月15日，美国儿童图书馆服务协会发布《参与、培育、提供、评估--儿童和家庭延伸服务模式白皮书》，该白皮书基于对公共图书馆延伸服务现状的调查，提出了参与、培育、提供、评估的公共图书馆儿童和家庭延伸服务发展模式。文章解读了该白皮书的主要内容，分析了美国公共图书馆延伸服务的特点，并对我国公共图书馆延伸服务提出了更新和重塑服务理念、扩大与社会力量的合作和参与、重视和加强服务评估的发展建议。

On January 15th of 2020, the American Association for Library Service to Children issued a white paper entitled Engage, Cultivate, Provide, Assess: an Outreach Model for service Children and families in which four service models were put forward based on investigation of the current situation. After an interpretation of the paper and an analysis of the characteristics of American extended services, Suggestion were put forward here for our public libraries to develop in extended services, including remodeling concept, expanding social  participation, and putting more attention to service evaluation.