SARGEANT, H. &. F. (2012). ACTIVE GRAMMAR FOR CLASSES- 4 AND 5. SCHOLASTIC.
Cita Chicago (17th ed.)SARGEANT, HOWARD & FERGUSSON. ACTIVE GRAMMAR FOR CLASSES- 4 AND 5. SCHOLASTIC, 2012.
Cita MLA (9th ed.)SARGEANT, HOWARD & FERGUSSON. ACTIVE GRAMMAR FOR CLASSES- 4 AND 5. SCHOLASTIC, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.