Cita APA

Fuchs, M., Bonner, M., & Westheimer, M. (2006). Focus on grammar: An integrated skills approach (3. ed.). New York: Pearson.

Citación estilo Chicago

Fuchs, Marjorie, Margaret Bonner, y Miriam Westheimer. Focus On Grammar: An Integrated Skills Approach. 3. ed. New York: Pearson, 2006.

Cita MLA

Fuchs, Marjorie, Margaret Bonner, y Miriam Westheimer. Focus On Grammar: An Integrated Skills Approach. 3. ed. New York: Pearson, 2006.