Gaya APA
Drs. Sudirman Siahaan, M.Pd, Drs Raphael Rahardjo, M Sc. (1999).
Indonesia Distance Learning Network (Ed 1).
Jakarta:
Puskom Dikbud.
Gaya Chicago
Drs. Sudirman Siahaan, M.Pd, Drs Raphael Rahardjo, M Sc.
Indonesia Distance Learning Network.
Ed 1
Jakarta:
Puskom Dikbud,
1999.
Text.
Gaya MLA
Drs. Sudirman Siahaan, M.Pd, Drs Raphael Rahardjo, M Sc.
Indonesia Distance Learning Network.
Ed 1
Jakarta:
Puskom Dikbud,
1999.
Text.
Gaya Turabian
Drs. Sudirman Siahaan, M.Pd, Drs Raphael Rahardjo, M Sc.
Indonesia Distance Learning Network.
Ed 1
Jakarta:
Puskom Dikbud,
1999.
Print.