Dyfyniad APA

Science Spin - Primary (Teacher's Edition). Weekly Reader Corporation.

Dyfyniad Arddull Chicago

Science Spin - Primary (Teacher's Edition). Weekly Reader Corporation.

Dyfyniad MLA

Science Spin - Primary (Teacher's Edition). Weekly Reader Corporation.

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