British Broadcasting Corporation, Kultur International Films, Gedda, N., Stich-Randall, T., Sutherland, J., Schwarzkopf, E., . . . Moore, G. (2002). World singers. West Long Branch, NJ: Kultur : Distributed under license from the British Broadcasting Corp..

British Broadcasting Corporation, Kultur International Films, Nicolai Gedda, Teresa Stich-Randall, Joan Sutherland, Elisabeth Schwarzkopf, Kim Borg, Christa Ludwig, and Gerald Moore. World Singers. West Long Branch, NJ: Kultur : Distributed under license from the British Broadcasting Corp., 2002.

British Broadcasting Corporation, et al. World Singers. West Long Branch, NJ: Kultur : Distributed under license from the British Broadcasting Corp., 2002.