Harry, K. (1999). Higher education through open and distance learning. Routledge.
Citazione stile Chigago Style (17a edizione)Harry, Keith. Higher Education Through Open and Distance Learning. London: Routledge, 1999.
Citatione MLA (9a ed.)Harry, Keith. Higher Education Through Open and Distance Learning. Routledge, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.