APA引文

Davies, P. (1995). Are We Alone: Philosophical Implications of the Discovery of Extraterrestrial Life. Penguin Books.

Chicago Edition Citation

Davies, Paul. Are We Alone: Philosophical Implications of the Discovery of Extraterrestrial Life. London: Penguin Books, 1995.

MLA引文

Davies, Paul. Are We Alone: Philosophical Implications of the Discovery of Extraterrestrial Life. Penguin Books, 1995.

警告：這些引文格式不一定是100％准確.