Cita APA (7a ed.)

Marks, L., & Darby, S. (2007). Burlington passport for ESO 1. Burlington Books.

Cita Chicago Style (17a ed.)

Marks, Linda, y Samantha Darby. Burlington Passport for ESO 1. Cyprus: Burlington Books, 2007.

Cita MLA (9a ed.)

Marks, Linda, y Samantha Darby. Burlington Passport for ESO 1. Burlington Books, 2007.