Cita APA (7a ed.)

Gruner, R. (1985). Philosophies of history: A critical essay. Gower.

Cita Chicago Style (17a ed.)

Gruner, Rolf. Philosophies of History: A Critical Essay. Aldershot: Gower, 1985.

Cita MLA (9a ed.)

Gruner, Rolf. Philosophies of History: A Critical Essay. Gower, 1985.