Piper, J. (1963). John Piper - recent work: March - April 1963 / Marlborough Fine Art Limited.
Chicago-Zitierstil (17. Ausg.)Piper, John. John Piper - Recent Work: March - April 1963 / Marlborough Fine Art Limited. London, 1963.
MLA-Zitierstil (8. Ausg.)Piper, John. John Piper - Recent Work: March - April 1963 / Marlborough Fine Art Limited. 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.