APA aipamena

Plummer, H. C. K. (1940). Probability and frequency. Macmillan and co. limited.

Chicago Style aipamena

Plummer, Henry Crozier Keating. Probability and Frequency. London: Macmillan and co. limited, 1940.

MLA aipamena

Plummer, Henry Crozier Keating. Probability and Frequency. Macmillan and co. limited, 1940.