Ruggles, R., & Ruggles, N. D. (1956). National Income Accounts and Income Analysis. New York: McGraw-Hill Book.
Dyfyniad Arddull ChicagoRuggles, Richard, và Nancy D. Ruggles. National Income Accounts and Income Analysis. New York: McGraw-Hill Book, 1956.
Dyfyniad MLARuggles, Richard, và Nancy D. Ruggles. National Income Accounts and Income Analysis. New York: McGraw-Hill Book, 1956.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.