Dyfyniad APA

Becerra-Becerra, J. E., & Costa, A. G. (2008). Use specifications of ornamental rocks based in accelerated ageing tests. Universidad Pedagógica y Tecnológica de Colombia - UPTC.

Dyfyniad Arddull Chicago

Becerra-Becerra, Javier Eduardo, and Antonio Gilberto Costa. Use Specifications of Ornamental Rocks Based in Accelerated Ageing Tests. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2008.

Dyfyniad MLA

Becerra-Becerra, Javier Eduardo, and Antonio Gilberto Costa. Use Specifications of Ornamental Rocks Based in Accelerated Ageing Tests. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.