[publisher not identified], [date of publication not identified]
Buku Teks SO
Baras, Edward M.
Osborne McGraw-Hill , 1985
Buku Teks SO
Lotus, [date of publication not identified]
Buku Teks SO
Lotus, [date of publication not identified]
Buku Referensi
Lotus, 1984
Buku Teks SO