[Haskell-beginners] Can we specify the module of the function being referred

Dear listers, I was writing a program which defines a function named "show". But at each of the recursive calls to itself "ghci" is showing the following message: ' Ambiguous occurrence `show' It could refer to either `show', defined at temp.hs:5:0 or `show', imported from Prelude ' I don't want to import the 'show' function from prelude. Is there any way out or I have to declare instance of the 'Show'? Can we specify the module of a function from which it will be referred? -- Amit kumar Dhar