Dyfyniad APA

Swango, C. J., & Steward, S. B. (2002). Help! I'm teaching middle school science. NSTApress.

Dyfyniad Arddull Chicago

Swango, C. Jill, and Sally Boles Steward. Help! I'm Teaching Middle School Science. Arlington, Va.: NSTApress, 2002.

Dyfyniad MLA

Swango, C. Jill, and Sally Boles Steward. Help! I'm Teaching Middle School Science. NSTApress, 2002.

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