Yamao, Y. A survey of properties of concrete aggregates from different sources near Metro Manila. Philippine Engineering Journal.
Lua i Stíl Chicago (17ú heag.)Yamao, Yoshihide. "A Survey of Properties of Concrete Aggregates from Different Sources Near Metro Manila." Philippine Engineering Journal .
Lua MLA (9ú heag.)Yamao, Yoshihide. "A Survey of Properties of Concrete Aggregates from Different Sources Near Metro Manila." Philippine Engineering Journal, .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.