Cita APA (7a ed.)

Seligson, P. (1997). Helping students to speak. (1a. ed.). Richmond Publishing.

Cita Chicago Style (17a ed.)

Seligson, Paul. Helping Students to Speak. 1a. ed. España: Richmond Publishing, 1997.

Cita MLA (9a ed.)

Seligson, Paul. Helping Students to Speak. 1a. ed. Richmond Publishing, 1997.