Não informado. (2018). The Penrose Graphic Arts International Annual. Lund Humphries.
Chicagoスタイル(17版)引用形式Não informado. The Penrose Graphic Arts International Annual. London: Lund Humphries, 2018.
MLA(8版)引用形式Não informado. The Penrose Graphic Arts International Annual. Lund Humphries, 2018.
警告: この引用は必ずしも正確ではありません.