Boller, P. F. (1981). American thought in transition: The impact of evolutionary naturalism 1865-1900. Washington: Universal Press of America.
استشهاد بنمط شيكاغوBoller, Paul F. American Thought in Transition: The Impact of Evolutionary Naturalism 1865-1900. Washington: Universal Press of America, 1981.
MLA استشهادBoller, Paul F. American Thought in Transition: The Impact of Evolutionary Naturalism 1865-1900. Washington: Universal Press of America, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.