APA (7th ed.) Citation

Parwez, G. A. (1989). Islam: A challenge to religion. Islamic Book Service.

Chicago Style (17th ed.) Citation

Parwez, Ghulam Ahmad. Islam: A Challenge to Religion. New Delhi: Islamic Book Service, 1989.

MLA (9th ed.) Citation

Parwez, Ghulam Ahmad. Islam: A Challenge to Religion. Islamic Book Service, 1989.