APA

Hoel P. G., . (1966). Elementary statistics. New York: John Wiley.

Chicago

Hoel Paul G, . 1966. Elementary statistics. New York: John Wiley.

Harvard

Hoel P. G., . (1966). Elementary statistics. New York: John Wiley.

MLA

Hoel Paul G, . Elementary statistics. New York: John Wiley. 1966.