Robert Joseph Paton Williams. (1997). The natural selection of the chemical elements: The environment and life's chemistry. New York, NY: Oxford Univ. Press.
استشهاد بنمط شيكاغوRobert Joseph Paton Williams. The Natural Selection of the Chemical Elements: The Environment and Life's Chemistry. New York, NY: Oxford Univ. Press, 1997.
MLA استشهادRobert Joseph Paton Williams. The Natural Selection of the Chemical Elements: The Environment and Life's Chemistry. New York, NY: Oxford Univ. Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.