Shmidt, O. I. (1966). Abstract theory of groups. W. H. Freeman.
Cita Chicago (17th ed.)Shmidt, Otto IUl'evich. Abstract Theory of Groups. San Francisco: W. H. Freeman, 1966.
Cita MLA (9th ed.)Shmidt, Otto IUl'evich. Abstract Theory of Groups. W. H. Freeman, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.