Langdon, D., & Everest. (2004). Spon's architects' and builders' price book (129th ed.). London: Spon Press.
Παραπομπή Chicago StyleLangdon, Davis, and Everest. Spon's Architects' and Builders' Price Book. 129th ed. London: Spon Press, 2004.
Παραπομπή MLALangdon, Davis, and Everest. Spon's Architects' and Builders' Price Book. 129th ed. London: Spon Press, 2004.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.