U.S. Bureau of the Census. (1965). Tests of use of post office resources to improve coverage of censuses. s.n.
Lua i Stíl Chicago (17ú heag.)U.S. Bureau of the Census. Tests of Use of Post Office Resources to Improve Coverage of Censuses. [Washington: s.n, 1965.
Lua MLA (9ú heag.)U.S. Bureau of the Census. Tests of Use of Post Office Resources to Improve Coverage of Censuses. s.n, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.