How do I store a reference?

Or can I?  This class failes to compile with the error:

lque.C: In constructor ‘QueTest::QueTest()’:
lque.C:10: error: uninitialized reference member ‘QueTest::que’

#include <deque>
using namespace std;
class QueTest
   {
   public:
     QueTest()
     {}

     void set_que(deque<string>& q)
     {
         que = q;
     }

   private:
     deque<string>& que;
   };

Thanks,
Jim.