Citazione Stile APA (7a Edizione)

Salaberri, S., & Fernández Santás, C. M. (2001). Universe 1: Student's book : [English for ESO, 2nd cycle]. MacMillan Heinemann.

Citazione stile Chigago Style (17a edizione)

Salaberri, Sagrario, e Carmen Mohamed Fernández Santás. Universe 1: Student's Book : [English for ESO, 2nd Cycle]. Oxford: MacMillan Heinemann, 2001.

Citatione MLA (9a ed.)

Salaberri, Sagrario, e Carmen Mohamed Fernández Santás. Universe 1: Student's Book : [English for ESO, 2nd Cycle]. MacMillan Heinemann, 2001.