SKF.. (1970). Skf general catalogue: Principles of bearing selection and application. Jarrold and Sons ltd.
Lua i Stíl Chicago (17ú heag.)SKF.. Skf General Catalogue: Principles of Bearing Selection and Application. Norwich: Jarrold and Sons ltd, 1970.
Lua MLA (9ú heag.)SKF.. Skf General Catalogue: Principles of Bearing Selection and Application. Jarrold and Sons ltd, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.