APA

Perraton H., . (2005). Open and distance learning in the developing world. London [u.a.]: Routledge.

Chicago

Perraton Hilary, . 2005. Open and distance learning in the developing world. London [u.a.]: Routledge.

Harvard

Perraton H., . (2005). Open and distance learning in the developing world. London [u.a.]: Routledge.

MLA

Perraton Hilary, . Open and distance learning in the developing world. London [u.a.]: Routledge. 2005.