Concrete Society. (2018). Concrete. Eyre and Spottiswoode.
Citação do estilo Chicago (17ª ed.)Concrete Society. Concrete. London: Eyre and Spottiswoode, 2018.
Citação MLA (8ª ed.)Concrete Society. Concrete. Eyre and Spottiswoode, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.