ebrary, Inc, Sriramkumar, L., & Seshadri, T. R. (2012). Vignettes in gravitation and cosmology. World Scientific Pub. Co..
芝加哥风格引文ebrary, Inc, L. Sriramkumar, 与 T. R. Seshadri. Vignettes in Gravitation and Cosmology. Singapore: World Scientific Pub. Co., 2012.
MLA引文ebrary, Inc, et al. Vignettes in Gravitation and Cosmology. World Scientific Pub. Co., 2012.
警告：这些引文格式不一定是100％准确.