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Gaya APA
Sistem Pendidikan Nasional. (1989).
Jakarta:
Dharma Bhakti.
Gaya Chicago
Sistem Pendidikan Nasional.
.
Jakarta:
Dharma Bhakti,
1989.
Text.
Gaya MLA
Sistem Pendidikan Nasional.
.
Jakarta:
Dharma Bhakti,
1989.
Text.
Gaya Turabian
Sistem Pendidikan Nasional.
Jakarta:
Dharma Bhakti,
1989.
Print.