APA-viite (7. p.)

Cohen, H. (2011). Numerical approximation methods: π ≈ 355/113. Springer.

Chicago-viite (17. p.)

Cohen, Harold. Numerical Approximation Methods: π ≈ 355/113. New York: Springer, 2011.

MLA-viite (9. p.)

Cohen, Harold. Numerical Approximation Methods: π ≈ 355/113. Springer, 2011.