Harris, H. H. (1959). The history and calculation of pi. Graduate Division of the Kansas State Teachers College.
Style de citation Chicago (17e éd.)Harris, Herman H. The History and Calculation of Pi. Emporia: Graduate Division of the Kansas State Teachers College, 1959.
Style de citation MLA (8e éd.)Harris, Herman H. The History and Calculation of Pi. Graduate Division of the Kansas State Teachers College, 1959.
Attention : ces citations peuvent ne pas être correctes à 100%.