Ishar Singh. (1969). The philosophy of Guru Nanak: A comparative study ([1st ed.].). Ranjit Pub. House.
Chicago-referens (17:e uppl.)Ishar Singh. The Philosophy of Guru Nanak: A Comparative Study. [1st ed.]. New Delhi: Ranjit Pub. House, 1969.
MLA-referens (8:e uppl.)Ishar Singh. The Philosophy of Guru Nanak: A Comparative Study. [1st ed.]. Ranjit Pub. House, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.