Selvam S.K. Distance Education For National Development. APH Publishing.
Citazione stile Chigago Style (17a edizione)Selvam S.K. Distance Education For National Development. APH Publishing.
Citatione MLA (9a ed.)Selvam S.K. Distance Education For National Development. APH Publishing.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.