APA

Shapiro H. S., . (1969). Smoothing and approximation of functions. New York: Van Nostrand Reinhold Co.

Chicago

Shapiro Harold S, . 1969. Smoothing and approximation of functions. New York: Van Nostrand Reinhold Co.

Harvard

Shapiro H. S., . (1969). Smoothing and approximation of functions. New York: Van Nostrand Reinhold Co.

MLA

Shapiro Harold S, . Smoothing and approximation of functions. New York: Van Nostrand Reinhold Co. 1969.