Penrose annual (the); volume 55, 1961

MLA

Delafons, A. Penrose Annual (the); Volume 55, 1961. London: Lund Humphries, 1961.

APA

Delafons, A. (1961). Penrose annual (the); volume 55, 1961. London: Lund Humphries.

Chicago

Delafons, A. Penrose Annual (the); Volume 55, 1961. London: Lund Humphries, 1961.