Ayerst, D. G. O. (1973). The Guardian omnibus, 1821-1971: An anthology of 150 years of Guardian writing. Collins.
Dyfyniad Arddull ChicagoAyerst, David George Ogilvy. The Guardian Omnibus, 1821-1971: An Anthology of 150 Years of Guardian Writing. London: Collins, 1973.
Dyfyniad MLAAyerst, David George Ogilvy. The Guardian Omnibus, 1821-1971: An Anthology of 150 Years of Guardian Writing. Collins, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.