Pratt, C. D., Vadetzsky, E. d., Langwill, K. E., McCloskey, K. E., & Schuemann, H. W. (1970). Twenty years of confectionery and chocolate progress. The AVI Publishing Company.
Cita Chicago (17th ed.)Pratt, Carl D., Eleanore de Vadetzsky, Katheryn E. Langwill, Kenneth E. McCloskey, i Harry W. Schuemann. Twenty Years of Confectionery and Chocolate Progress. Westport: The AVI Publishing Company, 1970.
Cita MLA (9th ed.)Pratt, Carl D., et al. Twenty Years of Confectionery and Chocolate Progress. The AVI Publishing Company, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.