Cita APA (7th ed.)
Symonds, M., Gordon, L. D., & James, M. H. (1898). The Story of Perugia. Dent.
Cita Chicago (17th ed.)
Symonds, Margaret, Lina Duff Gordon, i M. Helen James. The Story of Perugia. London: Dent, 1898.
Cita MLA (9th ed.)
Symonds, Margaret, et al. The Story of Perugia. Dent, 1898.
Atenció: Aquestes cites poden no estar 100% correctes.