Cita APA (7th ed.)
Swango, C. J., & Steward, S. B. (2002). Help! I'm teaching middle school science. NSTApress.
Cita Chicago (17th ed.)
Swango, C. Jill, i Sally Boles Steward. Help! I'm Teaching Middle School Science. Arlington, Va.: NSTApress, 2002.
Cita MLA (9th ed.)
Swango, C. Jill, i Sally Boles Steward. Help! I'm Teaching Middle School Science. NSTApress, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.