American Telephone and Telegraph Company. (1989). UNIX system V release 3.2. Programmer’s reference manual. Englewood Cliffs, N.J: Prentice Hall.
Trích dẫn kiểu ChicagoAmerican Telephone and Telegraph Company. UNIX System V Release 3.2. Programmer’s Reference Manual. Englewood Cliffs, N.J: Prentice Hall, 1989.
MLA CitationAmerican Telephone and Telegraph Company. UNIX System V Release 3.2. Programmer’s Reference Manual. Englewood Cliffs, N.J: Prentice Hall, 1989.
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