Cita APA (7a ed.)

Hadfield, J., & Hadfield, C. (2000). Oxford basics: Presenting new language.

Cita Chicago Style (17a ed.)

Hadfield, Jill, y Charles Hadfield. Oxford Basics: Presenting New Language. Oxford, 2000.

Cita MLA (9a ed.)

Hadfield, Jill, y Charles Hadfield. Oxford Basics: Presenting New Language. 2000.