Cita APA (7th ed.)

Ashbrook, W. (1969). The operas of Puccini. Cassell.

Cita Chicago (17th ed.)

Ashbrook, William. The Operas of Puccini. Londres: Cassell, 1969.

Cita MLA (9th ed.)

Ashbrook, William. The Operas of Puccini. Cassell, 1969.