Cita APA (7th ed.)

Certo, S. C., & Certo, S. T. (2009). Modern management: Concepts and skills (11th ed.). Prentice Hall.

Cita Chicago (17th ed.)

Certo, Samuel C., i S. Trevis Certo. Modern Management: Concepts and Skills. 11th ed. Upper Saddle River, NJ ; New Delhi: Prentice Hall, 2009.

Cita MLA (8th ed.)

Certo, Samuel C., i S. Trevis Certo. Modern Management: Concepts and Skills. 11th ed. Prentice Hall, 2009.