Cita APA (7th ed.)

Neumann, H. (1967). Varieties of groups. Springer-Verlag.

Cita Chicago (17th ed.)

Neumann, Hanna. Varieties of Groups. Berlín: Springer-Verlag, 1967.

Cita MLA (9th ed.)

Neumann, Hanna. Varieties of Groups. Springer-Verlag, 1967.