Silver.

MLA

Persson, Sigurd, and Sune Sundahl. Silver. Stockholm: [s.n.], 1979.

APA

Persson, S., & Sundahl, S. (1979). Silver. Stockholm: [s.n.].

Chicago

Persson, Sigurd, and Sune Sundahl. Silver. Stockholm: [s.n.], 1979.