Cita APA (7a ed.)

Richardso, C. H. (1954). An introduction to the calculus of finite differences. Van Nostrand.

Cita Chicago Style (17a ed.)

Richardso, Clarence Hudson. An Introduction to the Calculus of Finite Differences. New York: Van Nostrand, 1954.

Cita MLA (9a ed.)

Richardso, Clarence Hudson. An Introduction to the Calculus of Finite Differences. Van Nostrand, 1954.