Penrose Annual Volume 60 (the)

MLA

Penrose Annual Volume 60 (the). Londen: Percy Lund Humphries, 1967.

APA

(1967). Penrose Annual Volume 60 (the). Londen: Percy Lund Humphries.

Chicago

Penrose Annual Volume 60 (the). Londen: Percy Lund Humphries, 1967.