Cita APA (7th ed.)
Liebert, O. (1990). Poets & angels. Higher Octave Music.
Cita Chicago (17th ed.)
Liebert, Ottmar. Poets & Angels. Los Angeles, CA: Higher Octave Music, 1990.
Cita MLA (9th ed.)
Liebert, Ottmar. Poets & Angels. Higher Octave Music, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.