APA (7th ed.) Citation

Stečkin, S. B. (1977). Approximation of functions and operators. American Mathematical Society.

Chicago Style (17th ed.) Citation

Stečkin, Sergej B. Approximation of Functions and Operators. Providence ; Rhode Island: American Mathematical Society, 1977.

MLA (9th ed.) Citation

Stečkin, Sergej B. Approximation of Functions and Operators. American Mathematical Society, 1977.