Opitz, H. (2004). International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. Saur.
Chicagoスタイル(17版)引用形式Opitz, Helmut. International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. München: Saur, 2004.
MLA(8版)引用形式Opitz, Helmut. International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. Saur, 2004.
警告: この引用は必ずしも正確ではありません.