Helson, H. (1995). Harmonic analysis. Hindustan Book.
Cita Chicago (17th ed.)Helson, Henry. Harmonic Analysis. Delhi: Hindustan Book, 1995.
Cita MLA (9th ed.)Helson, Henry. Harmonic Analysis. Hindustan Book, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.