Citazione Stile APA (7a Edizione)

Cunningham, G. (1988). Language to go: Pre-intermediate, students' book. Longman.

Citazione stile Chigago Style (17a edizione)

Cunningham, Gillie. Language to Go: Pre-intermediate, Students' Book. England: Longman, 1988.

Citatione MLA (9a ed.)

Cunningham, Gillie. Language to Go: Pre-intermediate, Students' Book. Longman, 1988.