Perry, M. (1990). Western civilization: A brief survey. Houghton Mifflin Company.
Cita Chicago Style (17a ed.)Perry, Marvin. Western Civilization: A Brief Survey. Dallas Geneva: Houghton Mifflin Company, 1990.
Cita MLA (9a ed.)Perry, Marvin. Western Civilization: A Brief Survey. Houghton Mifflin Company, 1990.
Precaución: Estas citas no son 100% exactas.