222423 Knapper, C. K., & Cropley, A. J. (1985). Lifelong learning and higher education. Beckenham, Kent : Croom Helm.
Citazione stile Chigago Style (17a edizione)222423 Knapper, Christopher K., e A. J. Cropley. Lifelong Learning and Higher Education. Beckenham, Kent : Croom Helm, 1985.
Citatione MLA (9a ed.)222423 Knapper, Christopher K., e A. J. Cropley. Lifelong Learning and Higher Education. Beckenham, Kent : Croom Helm, 1985.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.