International comparative of the quality assurance systems in higher education 并列题名：International comparative of the quality assurance systems in higher education International comparative study of the system of skill formation Study on the models of quality assurance in higher education international journal of sustainability in higher education Accreditation and quality assurance of American higher education International comparative study of universitization of teacher education International journal of sustainability in higher education Study on the development of european quality assurance agencies in higher education 并列题名：Accreditation and quality assurance of American higher education