Williams, I. P., Ambastha, A., Anandarao, B. G., & Chandrasekhar, T. (1981). Astrophysical problems: A dynamical approach. Physical Research Laboratory.
Čikaški stil citiranja (17. izdanje)Williams, I. P., Ashok Ambastha, B. G. Anandarao, i T. Chandrasekhar. Astrophysical Problems: A Dynamical Approach. Ahmedabad: Physical Research Laboratory, 1981.
MLA način citiranja (8. izdanje)Williams, I. P., et al. Astrophysical Problems: A Dynamical Approach. Physical Research Laboratory, 1981.
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