Dyfyniad APA

(2005). Prentice Hall science explorer: Sound and light. Boston, MA: Pearson Prentice Hall.

Dyfyniad Arddull Chicago

Prentice Hall Science Explorer: Sound and Light. Boston, MA: Pearson Prentice Hall, 2005.

Dyfyniad MLA

Prentice Hall Science Explorer: Sound and Light. Boston, MA: Pearson Prentice Hall, 2005.

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