Fernández, S. G. (1996). My friends. An Interactive English Course: Workbook 3. Scott Foresman.
Chicago-viite (17. p.)Fernández, Samuel; Gómez. My Friends. An Interactive English Course: Workbook 3. Illinois, Estados Unidos: Scott Foresman, 1996.
MLA-viite (9. p.)Fernández, Samuel; Gómez. My Friends. An Interactive English Course: Workbook 3. Scott Foresman, 1996.
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