Cita APA (7th ed.)

Metzger, H. (1990). John Cage. Ed. Text + Kritik.

Cita Chicago (17th ed.)

Metzger, Heinz-Klaus. John Cage. München: Ed. Text + Kritik, 1990.

Cita MLA (8th ed.)

Metzger, Heinz-Klaus. John Cage. Ed. Text + Kritik, 1990.