BOLTON, W. H. (2021). Materials for enginners and technicians. Routledge.
Lua i Stíl Chicago (17ú heag.)BOLTON, William Higgins. Materials for Enginners and Technicians. Routledge, 2021.
Lua MLA (9ú heag.)BOLTON, William Higgins. Materials for Enginners and Technicians. Routledge, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.