Citazione APA

Gulliford, R. (1969). Backwardness and educational failure. National Foundation for Educational Research.

Stile di citazione Chicago

Gulliford, R. Backwardness and Educational Failure. Slough: National Foundation for Educational Research, 1969.

Citazione MLA

Gulliford, R. Backwardness and Educational Failure. National Foundation for Educational Research, 1969.

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