APA

Macaulay F. R., . (1931). The smoothing of time series. New York: National Bureau of Economic Research Inc.

Chicago

Macaulay Frederick Robertson, . 1931. The smoothing of time series. New York: National Bureau of Economic Research Inc.

Harvard

Macaulay F. R., . (1931). The smoothing of time series. New York: National Bureau of Economic Research Inc.

MLA

Macaulay Frederick Robertson, . The smoothing of time series. New York: National Bureau of Economic Research Inc. 1931.