SAGAN, C. (1982). Pustaka ilmu life: Planet. Tira Pustaka.
Chicago Style (17th ed.) CitationSAGAN, Carl. Pustaka Ilmu Life: Planet. Tira Pustaka, 1982.
MLA引文SAGAN, Carl. Pustaka Ilmu Life: Planet. Tira Pustaka, 1982.
警告：这些引文格式不一定是100％准确.
APA引文