Dyfyniad APA

Puccini, G., Giacosa, G., Gutman, J., & Illica, L. (1956). Tosca: Opera in three acts (after the play by Victorien Sardou). G. Schirmer.

Dyfyniad Arddull Chicago

Puccini, Giacomo, Giuseppe Giacosa, John Gutman, and Luigi Illica. Tosca: Opera in Three Acts (after the Play by Victorien Sardou). New York: G. Schirmer, 1956.

Dyfyniad MLA

Puccini, Giacomo, et al. Tosca: Opera in Three Acts (after the Play by Victorien Sardou). G. Schirmer, 1956.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.