Cita APA (7a ed.)

Mavridi, S., & Xerri, D. (2020). English for 21st Century Skills. Express Publishing.

Cita Chicago Style (17a ed.)

Mavridi, Sophia, y Daniel Xerri. English for 21st Century Skills. Berkshire, U.K.: Express Publishing, 2020.

Cita MLA (9a ed.)

Mavridi, Sophia, y Daniel Xerri. English for 21st Century Skills. Express Publishing, 2020.