(1970). The crisis in American education: An analysis and a proposal. Sudbury Valley School.
Chicago-Zitierstil (17. Ausg.)The Crisis in American Education: An Analysis and a Proposal. Framingham, Mass.: Sudbury Valley School, 1970.
MLA-Zitierstil (8. Ausg.)The Crisis in American Education: An Analysis and a Proposal. Sudbury Valley School, 1970.
警告：這些引文格式不一定是100％准確.