APA aipamena

Harris, H. H. (1959). The history and calculation of pi. Graduate Division of the Kansas State Teachers College.

Chicago Style aipamena

Harris, Herman H. The History and Calculation of Pi. Emporia: Graduate Division of the Kansas State Teachers College, 1959.

MLA aipamena

Harris, Herman H. The History and Calculation of Pi. Graduate Division of the Kansas State Teachers College, 1959.