Valentine Duval :
an autobiography of the last century /
Edited by the author of Mary Powell.

APA Citation

Manning, A. (1860). Valentine Duval: an autobiography of the last century. London: R. Bentley.

MLA Citation

Manning, Anne, 1807-1879. Valentine Duval: an Autobiography of the Last Century. London: R. Bentley, 1860.

Warning: These citations may not always be complete (especially for serials).