CAMPBELL, M. (1989). Satu, dua, tiga [1-2-3] Release 3: The Complete Reference/mary Campbell. Osborne McGraw-Hill.
Chicago-viite (17. p.)CAMPBELL, Mary. Satu, Dua, Tiga [1-2-3] Release 3: The Complete Reference/mary Campbell. Osborne McGraw-Hill, 1989.
MLA-viite (8. p.)CAMPBELL, Mary. Satu, Dua, Tiga [1-2-3] Release 3: The Complete Reference/mary Campbell. Osborne McGraw-Hill, 1989.
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