Cita APA (7a ed.)

Vira, R., & Vira, S. (2019). Why people give: Interpreting altruism. SAGE Select.

Cita Chicago Style (17a ed.)

Vira, Ratna, y Suhasini Vira. Why People Give: Interpreting Altruism. New Delhi: SAGE Select, 2019.

Cita MLA (8a ed.)

Vira, Ratna, y Suhasini Vira. Why People Give: Interpreting Altruism. SAGE Select, 2019.