APA citiranje

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

Chicago Style (17th ed.) Citation

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

MLA citiranje

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