Dyfyniad APA

ebrary, Inc, & Gray, J. E. (2011). Polystyrene: Properties, performance, and applications. Nova Science Publishers.

Dyfyniad Arddull Chicago

ebrary, Inc, and James E. Gray. Polystyrene: Properties, Performance, and Applications. Hauppauge, NY: Nova Science Publishers, 2011.

Dyfyniad MLA

ebrary, Inc, and James E. Gray. Polystyrene: Properties, Performance, and Applications. Nova Science Publishers, 2011.

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