MLA

What Is Scientology? : the Comprehensive Reference On the World's Fastest Growing Religion. Los Angeles, Calif.: Bridge Publications, 1992.

APA

(1992). What is Scientology? : the comprehensive reference on the world's fastest growing religion. Los Angeles, Calif.: Bridge Publications.

Chicago

What Is Scientology?: The Comprehensive Reference On the World's Fastest Growing Religion. Los Angeles, Calif.: Bridge Publications, 1992.