Cita APA (7a ed.)

Perrin, P. G. (1959). Writer´s Guide and Index to English (3.). Scott, Foresman &Company.

Cita Chicago Style (17a ed.)

Perrin, Porter G. Writer´s Guide and Index to English. 3. Chicago, Estados Unidos: Scott, Foresman &Company, 1959.

Cita MLA (9a ed.)

Perrin, Porter G. Writer´s Guide and Index to English. 3. Scott, Foresman &Company, 1959.