Birkhoff, G. (1973). A brief survey pf Modern Algebra (1st.). I.B.H pub Company.
Lua i Stíl Chicago (17ú heag.)Birkhoff, G. A Brief Survey Pf Modern Algebra. 1st. NULL: I.B.H pub Company, 1973.
Lua MLA (9ú heag.)Birkhoff, G. A Brief Survey Pf Modern Algebra. 1st. I.B.H pub Company, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.