Gjertsen, D. (1989). Science and philosophy: Past and present. Penguin Books.
Chicago Style (17th ed.) CitationGjertsen, Derek. Science and Philosophy: Past and Present. London: Penguin Books, 1989.
MLA引文Gjertsen, Derek. Science and Philosophy: Past and Present. Penguin Books, 1989.
警告:這些引文格式不一定是100%准確.