A great mystery solved;
being a continuation of and conclusion to "The mystery of Edwin Drood" (the unfinished work of Charles Dickens)
by Gillan Vase; ed. by Shirley Byron Jevons.
APA Citation
Vase, G., Jevons, S. Byron. (1920). A great mystery solved: being a continuation of and conclusion to "The mystery of Edwin Drood" (the unfinished work of Charles Dickens). London: Low, Marston.
MLA Citation
Vase, Gillan, and Shirley Byron Jevons. A Great Mystery Solved: Being a Continuation of And Conclusion to "The Mystery of Edwin Drood" (the Unfinished Work of Charles Dickens). London: Low, Marston, 1920.
Warning: These citations may not always be complete (especially for serials).