Cita APA (7a ed.)

Opitz, H. (2006). International Music Directory 2006/2007: Bd. 1-2 / [ed.: Helmut Opitz]. Saur.

Cita Chicago Style (17a ed.)

Opitz, Helmut. International Music Directory 2006/2007: Bd. 1-2 / [ed.: Helmut Opitz]. München: Saur, 2006.

Cita MLA (8a ed.)

Opitz, Helmut. International Music Directory 2006/2007: Bd. 1-2 / [ed.: Helmut Opitz]. Saur, 2006.