Gaya APA
Philippakis, A, S., Kazmier, L, J. (1978).
Informasi Systems Through COBOL .
Tokyo:
Arizona State University.
Gaya MLA
Philippakis, Andreas, S.., Kazmier, Leonard, J..
"Informasi Systems Through COBOL".
Tokyo:
Arizona State University,
1978.
Textbook.