Richard Tuttle : Portland Works 1976.

MLA

Richard Tuttle : Portland Works 1976. Köln: Galerie Karsten Greve, 1988.

APA

(1988). Richard Tuttle : Portland Works 1976. Köln: Galerie Karsten Greve.

Chicago

Richard Tuttle: Portland Works 1976. Köln: Galerie Karsten Greve, 1988.