Gaya APA
RIGGS, James L.. (1987).
PRODUCTION SYSTEMS (4).
:
.
Gaya Chicago
RIGGS, James L..
PRODUCTION SYSTEMS.
4
:
,
1987.
Text.
Gaya MLA
RIGGS, James L..
PRODUCTION SYSTEMS.
4
:
,
1987.
Text.
Gaya Turabian
RIGGS, James L..
PRODUCTION SYSTEMS.
4
:
,
1987.
Print.