Παραπομπή APA

Spiegel, M. R. (1972). Theory and problems of statistics. Mc Graw - Hill.

Παραπομπή Chicago Style

Spiegel, Murray R. Theory and Problems of Statistics. New York: Mc Graw - Hill, 1972.

Παραπομπή MLA

Spiegel, Murray R. Theory and Problems of Statistics. Mc Graw - Hill, 1972.