Fourier Analysis: An Introduction by Rami Shakarchi and Elias M. Stein

Fourier Analysis by Elias M. Stein & Rami Shakarchi

Fourier Analysis : An Introduction by Stein and Shakarchi, International ed.

Measure Theory by Paul R. Halmos

Fourier Analysis : An Introduction / Stein & Shakarchi / Princeton HB

Fourier Analysis and Its Applications (Pure and Applied Undergraduate Texts)

Real Analysis by Halsey Royden and Patrick Fitzpatrick, 5th ed. (Softcover)

Complex Analysis I Hardcover