Cita APA (7a ed.)

Langan, J. English brushup (3rd ed.). McGraw- hill higher education.

Cita Chicago Style (17a ed.)

Langan, John. English Brushup. 3rd ed. New York: McGraw- hill higher education.

Cita MLA (9a ed.)

Langan, John. English Brushup. 3rd ed. McGraw- hill higher education.