APA (7th ed.) Citation

Gill, P. S. (1969). The doctrine of Guru Nanak. New Book Co.

Chicago Style (17th ed.) Citation

Gill, Pritam Singh. The Doctrine of Guru Nanak. Jullundur City: New Book Co, 1969.

MLA (8th ed.) Citation

Gill, Pritam Singh. The Doctrine of Guru Nanak. New Book Co, 1969.