You may assume, automatically, that academic text books are the primary source of information when you are engaged in a formal study programme. This may be true, to a degree, usually there is little need to question the credibility of such texts – they have probably been recommended by a tutor. There are, however, many other sources of information which should not be overlooked. Such sources include: the internet, newspapers, journals, transcripts from radio or TV programmes, leaflets, photographs and other artefacts (man-made objects).
