APA (7e ed.) Bronvermelding

Opitz, H. (2004). International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. Saur.

Chicago (17e ed.) Bronvermelding

Opitz, Helmut. International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. München: Saur, 2004.

MLA (8e ed.) Bronvermelding

Opitz, Helmut. International Music Directory 2004/2005: Bd. 1-2 / [ed.: Helmut Opitz]. Saur, 2004.