Cita APA (7a ed.)

Calvert, A. F., & Hartley, C. G. (1907). The Prado, A description of the principal pictures in the Madrid Gellery. John Lane.

Cita Chicago Style (17a ed.)

Calvert, Albert Frederick, y C. Gasquoine Hartley. The Prado, A Description of the Principal Pictures in the Madrid Gellery. London: John Lane, 1907.

Cita MLA (9a ed.)

Calvert, Albert Frederick, y C. Gasquoine Hartley. The Prado, A Description of the Principal Pictures in the Madrid Gellery. John Lane, 1907.