SPAWLS , V. (2001). GRAMMAR: HOW TO BE TOP SERIES.
Cita Chicago (17th ed.)SPAWLS , VICKY. GRAMMAR: HOW TO BE TOP SERIES. 2001.
Cita MLA (9th ed.)SPAWLS , VICKY. GRAMMAR: HOW TO BE TOP SERIES. 2001.
Atenció: Aquestes cites poden no estar 100% correctes.