Cita APA (7a ed.)

Gould, L. L. (1974). The progressive era. Syracuse University Press.

Cita Chicago Style (17a ed.)

Gould, Lewis L. The Progressive Era. Syracuse, N.Y: Syracuse University Press, 1974.

Cita MLA (9a ed.)

Gould, Lewis L. The Progressive Era. Syracuse University Press, 1974.