Forrest Bess : (1911-1977) Here is a sign.

MLA

Forrest Bess : (1911-1977) Here Is a Sign. Köln: Museum Ludwig Köln, 1989.

APA

(1989). Forrest Bess : (1911-1977) Here is a sign. Köln: Museum Ludwig Köln.

Chicago

Forrest Bess: (1911-1977) Here Is a Sign. Köln: Museum Ludwig Köln, 1989.