Candlin, C., Kirkwood, J.M and Moore, H.M. (1975) “Developing Study Skills in English”, English for Academic Study., FTIC Occasional Paper, British Council Information Centre.
Strevens, P. (1977) New Orientations in the Teaching of English London, Oxford University Press.
Allen, J.P.B. and Widdowson H.G., 1974. English in Physical Science. Oxford: Oxford University Press, p. 38.
Weidner, R.T. and Sells, R.L., 1973. Elementary Classical Physics. Boston: Allyn and Bacon, Vol. 11, p. 282.
Weidner R.T. and Sells R.L., 1973. Elementary Classical Physics. Boston: Allyn and Bacon, Vol. 21, p. 474.