The Crown Publishing Group is a subsidiary of Random House, the world's largest book publisher, and publishes across several categories including fiction, non-fiction, biography, autobiography and memoir, cooking, health, business, and lifestyle. Its imprints include Crown, Crown Archetype, Crown Business, Crown Forum, Hogarth, Three Rivers Press, Clarkson Potter, Potter Craft, Potter Style, Broadway Books, Broadway Paperbacks, Doubleday Religion, WaterBrook/Multnomah, Harmony Books, Watson-Guptill, Amphoto Books, and Ten Speed Press. Formerly, the company also used the Bell Tower Press, Orion Books (unconnected to Orion Publishing in the United Kingdom), and related imprints. However, these have now either been discontinued or transferred to other Random House units. Crown authors include Jean Auel, Max Brooks, George W. Bush, Deepak Chopra, Ann Coulter, Giada De Laurentiis, Gillian Flynn, Jim Gaffigan, Ina Garten, Mindy Kaling, Jillian Michaels, Barack Obama, Michelle Obama, Theresa Rebeck, Mark Brennan Rosenberg, Rebecca Skloot, Suzanne Somers, Martha Stewart, and many others.