Citazione Stile APA (7a Edizione)

Gray, E. (2009). Skills builder for young learners: 1 starters (1st pub., 3rd impr.). Express Publishing.

Citazione stile Chigago Style (17a edizione)

Gray, Elizabeth. Skills Builder for Young Learners: 1 Starters. 1st pub., 3rd impr. Berkshire, UK: Express Publishing, 2009.

Citatione MLA (9a ed.)

Gray, Elizabeth. Skills Builder for Young Learners: 1 Starters. 1st pub., 3rd impr. Express Publishing, 2009.