APA (7th ed.) Citation

S. H. & Roberts, J. W. (1986). Sicily and Naples, or, A Fatal union: A tragedy. Garland Pub..

Chicago Style (17th ed.) Citation

S. H. and Joan Warthling Roberts. Sicily and Naples, or, A Fatal Union: A Tragedy. New York: Garland Pub., 1986.

MLA (9th ed.) Citation

S. H. and Joan Warthling Roberts. Sicily and Naples, or, A Fatal Union: A Tragedy. Garland Pub., 1986.