Sikka, A. S. (1972). Facets of Guru Nanak's thought. Bee Kay Publications.
Lua i Stíl Chicago (17ú heag.)Sikka, Ajit Singh. Facets of Guru Nanak's Thought. Ludhiana: Bee Kay Publications, 1972.
Lua MLA (8ú heag.)Sikka, Ajit Singh. Facets of Guru Nanak's Thought. Bee Kay Publications, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.