Gaya APA
Astek, PT. (b). (1995).
Fact book 1993 Astek. PT. .
Jakarta:
PT. Astek (Pesero).
Gaya Chicago
Astek, PT. (b).
Fact book 1993 Astek. PT..
Jakarta:
PT. Astek (Pesero),
1995.
Text.
Gaya MLA
Astek, PT. (b).
Fact book 1993 Astek. PT..
Jakarta:
PT. Astek (Pesero),
1995.
Text.
Gaya Turabian
Astek, PT. (b).
Fact book 1993 Astek. PT..
Jakarta:
PT. Astek (Pesero),
1995.
Print.