APA (7th ed.) Citation

Spencer, H. (1969). The Penrose annual 1969: The international review of the graphic arts. Lund Humphries.

Chicago Style (17th ed.) Citation

Spencer, Herbert. The Penrose Annual 1969: The International Review of the Graphic Arts. Londres: Lund Humphries, 1969.

MLA (9th ed.) Citation

Spencer, Herbert. The Penrose Annual 1969: The International Review of the Graphic Arts. Lund Humphries, 1969.