Erwin Heerich : Cardboard sculpture 1956-1968.

MLA

Erwin Heerich : Cardboard Sculpture 1956-1968. New York: Dwan Gallery, 1968.

APA

(1968). Erwin Heerich : Cardboard sculpture 1956-1968. New York: Dwan Gallery.

Chicago

Erwin Heerich: Cardboard Sculpture 1956-1968. New York: Dwan Gallery, 1968.