Petty, S., & Verbeck, E. (2012). Worth every penny: Build a business that thrills your customers and still charge what you're worth. Greenleaf Book Group Press.
Цитирование в стиле Чикаго (17-е изд.)Petty, Sarah, и Erin Verbeck. Worth Every Penny: Build a Business That Thrills Your Customers and Still Charge What You're Worth. Austin, Tex.: Greenleaf Book Group Press, 2012.
Цитирование MLA (8-е изд.)Petty, Sarah, и Erin Verbeck. Worth Every Penny: Build a Business That Thrills Your Customers and Still Charge What You're Worth. Greenleaf Book Group Press, 2012.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.