Cita APA (7th ed.)

Whittaker, E. T., & Robinson, G. (1926). The calculus of observations: A treatise on numerical mathematics (2nd ed.). Blackie.

Cita Chicago (17th ed.)

Whittaker, E. T., i G. Robinson. The Calculus of Observations: A Treatise on Numerical Mathematics. 2nd ed. London: Blackie, 1926.

Cita MLA (8th ed.)

Whittaker, E. T., i G. Robinson. The Calculus of Observations: A Treatise on Numerical Mathematics. 2nd ed. Blackie, 1926.