Παραπομπή APA

Hartree, D. (1958). Numerical analysis (2nd ed.). Oxford University.

Παραπομπή Chicago Style

Hartree, D.R. Numerical Analysis. 2nd ed. London: Oxford University, 1958.

Παραπομπή MLA

Hartree, D.R. Numerical Analysis. 2nd ed. Oxford University, 1958.