APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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