Cita APA (7a ed.)

Williams, I. P., Ambastha, A., Anandarao, B. G., & Chandrasekhar, T. (1981). Astrophysical problems: A dynamical approach. Physical Research Laboratory.

Cita Chicago Style (17a ed.)

Williams, I. P., Ashok Ambastha, B. G. Anandarao, y T. Chandrasekhar. Astrophysical Problems: A Dynamical Approach. Ahmedabad: Physical Research Laboratory, 1981.

Cita MLA (8a ed.)

Williams, I. P., et al. Astrophysical Problems: A Dynamical Approach. Physical Research Laboratory, 1981.