Citazione Stile APA (7a Edizione)

Balla, E. (1989). Hooray for english! 4. Scott, Foresman and Company.

Citazione stile Chigago Style (17a edizione)

Balla, Ellen. Hooray for English! 4. Glenview (Illinois): Scott, Foresman and Company, 1989.

Citatione MLA (9a ed.)

Balla, Ellen. Hooray for English! 4. Scott, Foresman and Company, 1989.