APA (7th ed.) Citation

Zygmund, A. (1952). Trigonometrical series (2. ed.). Chelsea.

Chicago Style (17th ed.) Citation

Zygmund, Antoni. Trigonometrical Series. 2. ed. New York, N.Y: Chelsea, 1952.

MLA (9th ed.) Citation

Zygmund, Antoni. Trigonometrical Series. 2. ed. Chelsea, 1952.