Dyfyniad APA

Perry, P. J., & Rillero, P. (1999). 365 science projects and activities. Publications Inc.

Dyfyniad Arddull Chicago

Perry, Phyllis Jean, and Peter Rillero. 365 Science Projects and Activities. Lincolnwood, IL: Publications Inc, 1999.

Dyfyniad MLA

Perry, Phyllis Jean, and Peter Rillero. 365 Science Projects and Activities. Publications Inc, 1999.

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