International Conference on the Origin of Life Barcelona, Spain, International Society for the Study of the Origin of Life, & Oro, J. (1974). Cosmochemical evolution and the origins of life: Proceedings of the fourth International Conference on the Origin of Life and the first meeting of the International Society for the Study of the Origin of Life, Barcelona, June 25-28, 1973. Reidel.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Conference on the Origin of Life Barcelona, Spain, International Society for the Study of the Origin of Life, و J. Oro. Cosmochemical Evolution and the Origins of Life: Proceedings of the Fourth International Conference on the Origin of Life and the First Meeting of the International Society for the Study of the Origin of Life, Barcelona, June 25-28, 1973. Dordrecht ; Boston: Reidel, 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Conference on the Origin of Life Barcelona, Spain, et al. Cosmochemical Evolution and the Origins of Life: Proceedings of the Fourth International Conference on the Origin of Life and the First Meeting of the International Society for the Study of the Origin of Life, Barcelona, June 25-28, 1973. Reidel, 1974.