Cita APA (7a ed.)

Kobbé, G. (1987). The Definitive Kobbé's Opera books. G.P.Putnam's sons.

Cita Chicago Style (17a ed.)

Kobbé, Gustav. The Definitive Kobbé's Opera Books. New York: G.P.Putnam's sons, 1987.

Cita MLA (9a ed.)

Kobbé, Gustav. The Definitive Kobbé's Opera Books. G.P.Putnam's sons, 1987.