Ray Kroc. Grinding It Out: The Making Of Mcdonalds.
Cita Chicago (17th ed.)Ray Kroc. Grinding It Out: The Making Of Mcdonalds. St. Martins Paperbacks.
Cita MLA (8th ed.)Ray Kroc. Grinding It Out: The Making Of Mcdonalds.
Atenció: Aquestes cites poden no estar 100% correctes.