Cita APA (7th ed.)

Ruggles, R., & Ruggles, N. D. (1956). National income accounts and income analysis. McGraw-Hill.

Cita Chicago (17th ed.)

Ruggles, Richard, i Nancy D. Ruggles. National Income Accounts and Income Analysis. Nueva York: McGraw-Hill, 1956.

Cita MLA (9th ed.)

Ruggles, Richard, i Nancy D. Ruggles. National Income Accounts and Income Analysis. McGraw-Hill, 1956.