Gaya APA

Alder, H, L., Roessler, E, B. (1977). Introduction to Probability and Statistics 6'th Ed. (6). San Fransisco: W.H. Freeman and Company.

Gaya MLA

Alder, Henry, L.., Roessler, Edward, B.. "Introduction to Probability and Statistics 6'th Ed.". 6 San Fransisco: W.H. Freeman and Company, 1977. Text.