Citazione Stile APA (7a Edizione)

Hirschberg, S., & Hirschberg, T. (2003). Past to present: Ideas that changed our world. Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Hirschberg, Stuart, e Terry Hirschberg. Past to Present: Ideas That Changed Our World. Upper Saddle River, N.J: Prentice Hall, 2003.

Citatione MLA (9a ed.)

Hirschberg, Stuart, e Terry Hirschberg. Past to Present: Ideas That Changed Our World. Prentice Hall, 2003.