For the articals on Revenge tragedies and Spain Solomon Romney penned them, and has the cources he used.
For most of the rest of the site I used the Norton edition of The Changeling. Some info I reposted from websites and those are cited where necessary. The information on fairy changeling came from my own exploration on the subject some years ago. to see a good list of sources look at the bibliography of the Jane Eyre paper.
Articles
Daalder, Jost. "The Closet Drama in The Changeling, V.III". Modern Philology, V89 N2 (Nov. 1991) p225-230
Eaton, Sara. "Beatrice-Joanna and the Rhetoric of Love in The Changeling. Theatre Journal, V36, N3. Renaissance Re-Visions (Oct. 1984) p.371-382
Kistner, A. L. and M. K. "The Five Structures of The Changeling. //Modern Language Studies, V11 N2 (Spring 1981) p40-53
Slater, Ann Pasternak. "Hypallage, Barley-break and The Changeling. The Review of English Studies, New Series, V34, N136 (Nov. 1983) p429-440