Grewal, J. (1990). The sikhs of the Punjab. Unive. Pr..
Cita Chicago (17th ed.)Grewal, J.S. The Sikhs of the Punjab. Cambridge: Unive. Pr., 1990.
Cita MLA (9th ed.)Grewal, J.S. The Sikhs of the Punjab. Unive. Pr., 1990.
Atenció: Aquestes cites poden no estar 100% correctes.