Cita APA (7th ed.)

Foley, M., & Hall, D. (2001). Developing opportunities: 4§ año de Educación Media, student's book. Pearson Education.

Cita Chicago (17th ed.)

Foley, Mark, i Diane Hall. Developing Opportunities: 4§ Año De Educación Media, Student's Book. Harlow: Pearson Education, 2001.

Cita MLA (9th ed.)

Foley, Mark, i Diane Hall. Developing Opportunities: 4§ Año De Educación Media, Student's Book. Pearson Education, 2001.