RADFORD, A. (1948). Transformational grammar: A first Course. Cambridge University Press.
Cita Chicago (17th ed.)RADFORD, Andrew. Transformational Grammar: A First Course. Cambridge University Press, 1948.
Cita MLA (9th ed.)RADFORD, Andrew. Transformational Grammar: A First Course. Cambridge University Press, 1948.
Atenció: Aquestes cites poden no estar 100% correctes.