* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588.
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 London: Hamish Hamilton ISBN 0-241-10149-2
* Wilson, Derek ( 1981 ): Sweet Robin: A Biography of Robert Dudley Earl of Leicester 1533 – 1588 Hamish Hamilton ISBN 0-241-10149-2
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