Nirala, D. K. (2013). Better English pronounciation. Anmol Publications.
Chicago Edition CitationNirala, Dileep Kumar. Better English Pronounciation. New Delhi: Anmol Publications, 2013.
Cita MLANirala, Dileep Kumar. Better English Pronounciation. Anmol Publications, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.