Footnote for a Foreword

For a foreword, an adequate footnote would be:

¹  Foreword by Keith Thomas, General Editor Past Masters, in A.L. Le Quesne et al., Victorian Thinkers: Carlyle, Ruskin, Arnold, Morris, Oxford: Oxford University Press, 1992, p. x.

(Please note that "x" would be the book's page number where the foreword is included).

Although I prefer the previous format, another possibility would be:

¹ A.L. Le Quesne et al., Victorian Thinkers: Carlyle, Ruskin, Arnold, Morris, Oxford: Oxford University Press, 1992, p. x.  Foreword by Keith Thomas, General Editor Past Masters.