Παραπομπή APA

Shapiro, H. S. (1955). Smoothing and approximation of functions.

Παραπομπή Chicago Style

Shapiro, Harold S. Smoothing and Approximation of Functions. Institute of Mathematical Sciences, Madras, 1955.

Παραπομπή MLA

Shapiro, Harold S. Smoothing and Approximation of Functions. 1955.