Gaya APA

Roessler, H, L, A, ,, B. (1977). Introduction to Probability and statistics (keenam). San Francisco: WH.Freema And Company.

Gaya MLA

Roessler, Henry, L., Alder, ,Edward, B.. "Introduction to Probability and statistics". keenam San Francisco: WH.Freema And Company, 1977. Text.