Sharp, D. (1980). English at school: The wood and the trees : a manual for teachers of English as a mother tongue. Oxford [etc.]: Pergamon.

Sharp, Derrick. English At School: The Wood and the Trees : A Manual for Teachers of English As a Mother Tongue. Oxford [etc.]: Pergamon, 1980.

Sharp, Derrick. English At School: The Wood and the Trees : A Manual for Teachers of English As a Mother Tongue. Oxford [etc.]: Pergamon, 1980.