Gaya APA
Center, S, T. (1993).
Proceeding of seminar on sabo engineering (17 - 20 February 1993) .
Sleman:
Sabo Technical Center.
Gaya MLA
Center, Sabo, Technical.
"Proceeding of seminar on sabo engineering (17 - 20 February 1993)".
Sleman:
Sabo Technical Center,
1993.
Text.