Cita APA (7a ed.)

Steen, M. (2014). Verdi's Il Trovatore: A short guide to a great opera. Original Writing.

Cita Chicago Style (17a ed.)

Steen, Michael. Verdi's Il Trovatore: A Short Guide to a Great Opera. Dublin, Ireland: Original Writing, 2014.

Cita MLA (9a ed.)

Steen, Michael. Verdi's Il Trovatore: A Short Guide to a Great Opera. Original Writing, 2014.