Singh, G. (1967). Guru Nanak. National Book Trust, India.
Lua i Stíl Chicago (17ú heag.)Singh, Gopal. Guru Nanak. New Delhi: National Book Trust, India, 1967.
Lua MLA (8ú heag.)Singh, Gopal. Guru Nanak. National Book Trust, India, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.