Foley, M., & Hall, D. (2001). Developing opportunities: 4§ año de Educación Media, student's book. Pearson Education.
Chicago Style (17. basım) AtıfFoley, Mark, ve Diane Hall. Developing Opportunities: 4§ Año De Educación Media, Student's Book. Harlow: Pearson Education, 2001.
MLA (9th ed.) AtıfFoley, Mark, ve Diane Hall. Developing Opportunities: 4§ Año De Educación Media, Student's Book. Pearson Education, 2001.
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