Gaya APA
PHILIPPAKIS, A, S.
(1978).
Information Syistem Through Cobol
.
USA:
Mc Graw-Hiil.
Gaya MLA
PHILIPPAKIS, Andreans, S..
"Information Syistem Through Cobol".
USA:
Mc Graw-Hiil,
1978.
Printed Book.