U. S. Employment Service. (1966). Occupations in the field of library science. [U. S. Govt. Print. Off.].
Lua i Stíl Chicago (17ú heag.)U. S. Employment Service. Occupations in the Field of Library Science. [Washington]: [U. S. Govt. Print. Off.], 1966.
Lua MLA (9ú heag.)U. S. Employment Service. Occupations in the Field of Library Science. [U. S. Govt. Print. Off.], 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.