Cita APA (7th ed.)

Marek, G. R. (1957). The world treasury of grand opera: Its triumphs, trials, and great personalities ([1st ed.].). Harper.

Cita Chicago (17th ed.)

Marek, George Richard. The World Treasury of Grand Opera: Its Triumphs, Trials, and Great Personalities. [1st ed.]. New York: Harper, 1957.

Cita MLA (9th ed.)

Marek, George Richard. The World Treasury of Grand Opera: Its Triumphs, Trials, and Great Personalities. [1st ed.]. Harper, 1957.