Cita APA (7a ed.)

Kelty, M. G. How our civilization began. Ginn and Co..

Cita Chicago Style (17a ed.)

Kelty, Mary G. How Our Civilization Began. Boston ; New York, [etc]: Ginn and Co..

Cita MLA (8a ed.)

Kelty, Mary G. How Our Civilization Began. Ginn and Co..