Gaya APA
Coschi, G., Schueler, J.
(1986).
WATFOR-77 User's Guide IBM PC with DOS
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canada:
WATCOM Publications Limited.
Gaya MLA
Coschi, G.., Schueler, J.B..
"WATFOR-77 User's Guide IBM PC with DOS".
canada:
WATCOM Publications Limited,
1986.
Buku.