International Conference on the Unity of the Sciences Philadelphia, P. (1983). Absolute values and the creation of the new world: Proceedings of the Eleventh International Conference on the Unity of the Sciences, November 25-28, 1982, Philadelphia, Pennsylvania. New York: International Cultural Foundation Press.
استشهاد بنمط شيكاغوInternational Conference on the Unity of the Sciences Philadelphia, Pa.). Absolute Values and the Creation of the New World: Proceedings of the Eleventh International Conference On the Unity of the Sciences, November 25-28, 1982, Philadelphia, Pennsylvania. New York: International Cultural Foundation Press, 1983.
MLA استشهادInternational Conference on the Unity of the Sciences Philadelphia, Pa.). Absolute Values and the Creation of the New World: Proceedings of the Eleventh International Conference On the Unity of the Sciences, November 25-28, 1982, Philadelphia, Pennsylvania. New York: International Cultural Foundation Press, 1983.