APA-viite

Singal, M., & Singal, A. R. (1976). Objective test in Undergraduate mathematics: Trignometry. University leadership project in Mathematics.

Chicago-tyylinen lähdeviittaus

Singal, M.K, ja Asha Rani Singal. Objective Test in Undergraduate Mathematics: Trignometry. Meerut: University leadership project in Mathematics, 1976.

MLA-viite

Singal, M.K, ja Asha Rani Singal. Objective Test in Undergraduate Mathematics: Trignometry. University leadership project in Mathematics, 1976.