Citazione Stile APA (7a Edizione)

León, W. U. (2010). Encouraging Teenagers to Improve Speaking Skills through Games in a Colombian Public School. Universidad Nacional de Colombia.

Citazione stile Chigago Style (17a edizione)

León, William Urrutia. Encouraging Teenagers to Improve Speaking Skills Through Games in a Colombian Public School. Universidad Nacional de Colombia, 2010.

Citatione MLA (9a ed.)

León, William Urrutia. Encouraging Teenagers to Improve Speaking Skills Through Games in a Colombian Public School. Universidad Nacional de Colombia, 2010.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.