Generic quick sort algorithm

Hi,

Ive wrote some code to sort an array. I want to convert my method so that it sorts Books. (A class i've wrote)

Hope somebody can help

 static public void SelectionSort(int[] a)
        {
            for (int i = 0; i < a.Length - 1; i++)
            {
                int small = i;
                for (int j = i + 1; j < a.Length; j++)
                {
                    if (a[j] < a[small])
                        small = j;
                }
                swap(ref a[i], ref a[small]);
            }
        }

        static void Main(string[] args)
        {

            string[] array1 = { "Fred", "Zoe", "Angela", "Umbrella", "Ben" };
            string[] titles = {"Writing Solid Code",
                "Objects First","Programming Gems",
                "Head First Java","The C Programming Language",
                "Mythical Man Month","The Art of Programming",
                "Coding Complete","Design Patterns", 
                "Problem Solving in Java"};
            string[] authors ={ "Maguire", "Kolling", "Bentley", "Sierra", "Richie", "Brooks", "Knuth", "McConnal", "Gamma", "Weiss" };
            string[] isbns = { "948343", "849328493", "38948932", "394834342", "983492389", "84928334", "4839455", "21331322", "348923948","43893284", "9483294", "9823943" };

            Book[] library = new Book[10];

            for (int i = 0; i < library.Length; i++)
            {
                library[i] = new Book(isbns[i], titles[i], authors[i]);
            }

            foreach (Book book in library)
            {
                Console.WriteLine(" {0} ", book);
            }
            Console.WriteLine();
            Console.ReadKey();

        }