Cita APA (7a ed.)

(1971). Bridget Riley: Paintings and drawings 1951 - 71.

Cita Chicago Style (17a ed.)

Bridget Riley: Paintings and Drawings 1951 - 71. London, 1971.

Cita MLA (8a ed.)

Bridget Riley: Paintings and Drawings 1951 - 71. 1971.