Williams, G. L. (1977). Towards lifelong education: A new role for higher education institutions. UNESCO.
Citazione stile Chigago Style (17a edizione)Williams, Gareth L.. Towards Lifelong Education: A New Role for Higher Education Institutions. Paris: UNESCO, 1977.
Citatione MLA (9a ed.)Williams, Gareth L.. Towards Lifelong Education: A New Role for Higher Education Institutions. UNESCO, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.