Gutiérrez Bello, M., & Velilla Robertín, A. (1987). English for Spanish personnel: An English for special purposes book. Scott, Foresman.
Cita Chicago Style (17a ed.)Gutiérrez Bello, Marta, y Angie Velilla Robertín. English for Spanish Personnel: An English for Special Purposes Book. Glenview, Illinois: Scott, Foresman, 1987.
Cita MLA (9a ed.)Gutiérrez Bello, Marta, y Angie Velilla Robertín. English for Spanish Personnel: An English for Special Purposes Book. Scott, Foresman, 1987.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.