Immanuel Kant, E. b. E. W. (2012). Kant: Natural Science (1.). Cambridge University Press.
Dyfyniad Arddull ChicagoImmanuel Kant, Edited by Eric Watkins. Kant: Natural Science. 1. Cambridge University Press, 2012.
Dyfyniad MLAImmanuel Kant, Edited by Eric Watkins. Kant: Natural Science. 1. Cambridge University Press, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.