The black agate, or, Old foes with new faces :
a play in five acts /
by Elizabeth Bowers.

APA Citation

Bowers, E., Kingsley, C. (1859). The black agate, or, Old foes with new faces: a play in five acts. Philadelphia: U.S. Steam-Power and Job Printing Establishment.

MLA Citation

Bowers, Elizabeth, and Charles Kingsley. The Black Agate, Or, Old Foes With New Faces: a Play In Five Acts. Philadelphia: U.S. Steam-Power and Job Printing Establishment, 1859.

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