Cita APA (7a ed.)

Summers], [. D. (2003). Longman. Pearson Education.

Cita Chicago Style (17a ed.)

Summers], [Dir. Della. Longman. Pearson Education, 2003.

Cita MLA (8a ed.)

Summers], [Dir. Della. Longman. Pearson Education, 2003.