APA
UNITED NATIONS I. E. A. S. A. (. O., UNITED NATIONS I. E. A. S. A. (. O., . (1979). Yearbook of construction statistics 1969-78. New York: United Nations.
Chicago
UNITED NATIONS INTERNASTIONAL ECONOMIC AND SOCIAL AFFAIRS (Deptt Of-), UNITED NATIONS INTERNASTIONAL ECONOMIC AND SOCIAL AFFAIRS (Deptt Of-), . 1979. Yearbook of construction statistics 1969-78. New York: United Nations.
Harvard
UNITED NATIONS I. E. A. S. A. (. O., UNITED NATIONS I. E. A. S. A. (. O., . (1979). Yearbook of construction statistics 1969-78. New York: United Nations.
MLA
UNITED NATIONS INTERNASTIONAL ECONOMIC AND SOCIAL AFFAIRS (Deptt Of-), UNITED NATIONS INTERNASTIONAL ECONOMIC AND SOCIAL AFFAIRS (Deptt Of-), . Yearbook of construction statistics 1969-78. New York: United Nations. 1979.
