Dyfyniad APA

U.S. Bureau of the Census. (1949). Annual survey of manufactures. 1949. U.S. Govt. Print. Off.

Dyfyniad Arddull Chicago

U.S. Bureau of the Census. Annual Survey of Manufactures. 1949. Washington: U.S. Govt. Print. Off, 1949.

Dyfyniad MLA

U.S. Bureau of the Census. Annual Survey of Manufactures. 1949. U.S. Govt. Print. Off, 1949.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.