RUGGLES, R. (1956). National Income Accounts And Income Analysis. Richard Ruggles And Nancy D. Ruggles. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRUGGLES, Richard. National Income Accounts And Income Analysis. Richard Ruggles And Nancy D. Ruggles. McGraw-Hill, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRUGGLES, Richard. National Income Accounts And Income Analysis. Richard Ruggles And Nancy D. Ruggles. McGraw-Hill, 1956.
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