Citazione Stile APA (7a Edizione)

Ana Kolkowska. (2019). Cambridge IGCSE Spanish as a Foreign Language. Harper Collins.

Citazione stile Chigago Style (17a edizione)

Ana Kolkowska. Cambridge IGCSE Spanish as a Foreign Language. London: Harper Collins, 2019.

Citatione MLA (9a ed.)

Ana Kolkowska. Cambridge IGCSE Spanish as a Foreign Language. Harper Collins, 2019.