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Gaya APA

Syarif, R. (1990). Peningkatan Produktivitas Terpadu (PPT) . Bandung: Bandung: Angkasa.

Gaya MLA

Syarif, Rusli. "Peningkatan Produktivitas Terpadu (PPT)". Bandung: Bandung: Angkasa, 1990. Text.