Cita APA (7a ed.)

Taylor, L., & Kelly, P. (2002). International Express Elementary Student´s Book. Oxford University.

Cita Chicago Style (17a ed.)

Taylor, Liz, y Paul Kelly. International Express Elementary Student´s Book. Reino Unido: Oxford University, 2002.

Cita MLA (8a ed.)

Taylor, Liz, y Paul Kelly. International Express Elementary Student´s Book. Oxford University, 2002.