Russell, B., & Dasgupta, S. (2002). Opeksha bader o a ka kha. Ananda Publishers.
Cita Chicago (17th ed.)Russell, Bertrand, i Shatrojit Dasgupta. Opeksha Bader O a Ka Kha. Kolkata: Ananda Publishers, 2002.
Cita MLA (9th ed.)Russell, Bertrand, i Shatrojit Dasgupta. Opeksha Bader O a Ka Kha. Ananda Publishers, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.