APA-viite

Davies, P. (1995). About time: Einstein's unfinished revolution. Penguin Books.

Chicago-tyylinen lähdeviittaus

Davies, Paul. About Time: Einstein's Unfinished Revolution. London: Penguin Books, 1995.

MLA-viite

Davies, Paul. About Time: Einstein's Unfinished Revolution. Penguin Books, 1995.