Howard-Williams, D., & Tomalin, M. Instant Lessons 3, Advanced.
Cita Chicago (17th ed.)Howard-Williams, Deirdre, i Mary Tomalin. Instant Lessons 3, Advanced.
Cita MLA (8th ed.)Howard-Williams, Deirdre, i Mary Tomalin. Instant Lessons 3, Advanced.
Atenció: Aquestes cites poden no estar 100% correctes.