Johnson, R. E. (1953). First course in abstract algebra. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Johnson, Richard E. First Course in Abstract Algebra. Englewood Cliffs, N. J: Prentice-Hall, 1953.
Lua MLA (9ú heag.)Johnson, Richard E. First Course in Abstract Algebra. Prentice-Hall, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.