Cita APA (7th ed.)

Clark, M. H. (2006). Two little girls in blue. Pocket Books.

Cita Chicago (17th ed.)

Clark, Mary Higgins. Two Little Girls in Blue. New York, NY: Pocket Books, 2006.

Cita MLA (8th ed.)

Clark, Mary Higgins. Two Little Girls in Blue. Pocket Books, 2006.