Cisneros, I. (1984). Spanish in three months (1st American edition.). Hugo's language Books Ltd.
Citazione stile Chigago Style (17a edizione)Cisneros, Isabel. Spanish in Three Months. 1st American edition. Marlesford, Woodbridge, Suffolk: Hugo's language Books Ltd, 1984.
Citatione MLA (9a ed.)Cisneros, Isabel. Spanish in Three Months. 1st American edition. Hugo's language Books Ltd, 1984.
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