Campbell, N. R. (1957). Foundations of science: The philosophy of theory and experiment. (Formerly titled: Physics, the elements). Dover Publications.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Campbell, Norman Robert. Foundations of Science: The Philosophy of Theory and Experiment. (Formerly Titled: Physics, the Elements). New York: Dover Publications, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Campbell, Norman Robert. Foundations of Science: The Philosophy of Theory and Experiment. (Formerly Titled: Physics, the Elements). Dover Publications, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.