Παραπομπή APA

Spiegel, M. R. (1992). Theory and problems of statistics (Ed.2.).

Παραπομπή Chicago Style

Spiegel, Murray R. Theory and Problems of Statistics. Ed.2. Londn, mc Graw Hill Book Company, 1992.

Παραπομπή MLA

Spiegel, Murray R. Theory and Problems of Statistics. Ed.2. 1992.