Cita APA (7a ed.)
Van Helden, A. (1985). Measuring the universe: Cosmic dimensions from Aristarchus to Halley. University of Chicago Press.
Cita Chicago Style (17a ed.)
Van Helden, Albert. Measuring the Universe: Cosmic Dimensions from Aristarchus to Halley. Chicago: University of Chicago Press, 1985.
Cita MLA (9a ed.)
Van Helden, Albert. Measuring the Universe: Cosmic Dimensions from Aristarchus to Halley. University of Chicago Press, 1985.
Precaución: Estas citas no son 100% exactas.