Armitstead, P. (1972). English in the middle years. Blackwell.
Cita Chicago (17th ed.)Armitstead, Peter. English in the Middle Years. Oxford: Blackwell, 1972.
Cita MLA (8th ed.)Armitstead, Peter. English in the Middle Years. Blackwell, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.