Cita APA (7a ed.)
Kerr, P. American Inside Out: Workbook. Intermediate.
Cita Chicago Style (17a ed.)
Kerr, Philip. American Inside Out: Workbook. Intermediate.
Cita MLA (9a ed.)
Kerr, Philip. American Inside Out: Workbook. Intermediate.
Precaución: Estas citas no son 100% exactas.