APA (7th ed.) Citation

Sandberg, V., & Herold, U. (1990). A portrait of Berlin: August 13, 1990. Constructiv.

Chicago Style (17th ed.) Citation

Sandberg, Viola, and Ulrich Herold. A Portrait of Berlin: August 13, 1990. Berlin: Constructiv, 1990.

MLA (9th ed.) Citation

Sandberg, Viola, and Ulrich Herold. A Portrait of Berlin: August 13, 1990. Constructiv, 1990.