Citazione APA

Sergio Elliot. (1990). FAO economic and social development paper N.67: Distance education systems. Rome: FAO.

Stile di citazione Chicago

Sergio Elliot. FAO Economic and Social Development Paper N.67: Distance Education Systems. Rome: FAO, 1990.

Citazione MLA

Sergio Elliot. FAO Economic and Social Development Paper N.67: Distance Education Systems. Rome: FAO, 1990.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.