APA (7th ed.) Citation

Stockhausen, K. (1967). Nr. 4: Klavierstück IX. Universal Edition.

Chicago Style (17th ed.) Citation

Stockhausen, Karlheinz. Nr. 4: Klavierstück IX. [London]: Universal Edition, 1967.

MLA (9th ed.) Citation

Stockhausen, Karlheinz. Nr. 4: Klavierstück IX. Universal Edition, 1967.

Warning: These citations may not always be 100% accurate.