Christensen, S. K. (1953). A comparative study of the milk control programs of the northeastern states.
Lua i Stíl Chicago (17ú heag.)Christensen, Seymour Kent. A Comparative Study of the Milk Control Programs of the Northeastern States. [Ithaca, N.Y.], 1953.
Lua MLA (8ú heag.)Christensen, Seymour Kent. A Comparative Study of the Milk Control Programs of the Northeastern States. 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.