Παραπομπή APA

Spiegel, M. (1961). Theory and problems of statistics. Mc Graw Hills Company.

Παραπομπή Chicago Style

Spiegel, Murray. Theory and Problems of Statistics. Sydney: Mc Graw Hills Company, 1961.

Παραπομπή MLA

Spiegel, Murray. Theory and Problems of Statistics. Mc Graw Hills Company, 1961.