APA (7. basım) Alıntı

U.S. Bureau of the Census. (1951). Census of manufactures, 1949, Purto Rico. s.n.

Chicago Style (17. basım) Atıf

U.S. Bureau of the Census. Census of Manufactures, 1949, Purto Rico. Washington: s.n, 1951.

MLA (9th ed.) Atıf

U.S. Bureau of the Census. Census of Manufactures, 1949, Purto Rico. s.n, 1951.