Julia Burchell. (2018). Cambridge English Teacher's Guide. Harper Collins.
Cita Chicago (17th ed.)Julia Burchell. Cambridge English Teacher's Guide. London: Harper Collins, 2018.
Cita MLA (9th ed.)Julia Burchell. Cambridge English Teacher's Guide. Harper Collins, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.