Franklin

MLA

1977 Census of Construction Industries : Industry and Area Statistics. Washington: U.S. Dept. of Commerce, Bureau of the Census, 1981.

APA

(1981). 1977 census of construction industries : industry and area statistics. Washington: U.S. Dept. of Commerce, Bureau of the Census.

Chicago

1977 Census of Construction Industries: Industry and Area Statistics. Washington: U.S. Dept. of Commerce, Bureau of the Census, 1981.