Gaya APA

Purba, M, T. (2013). Analisis Fouling Factor pada Heat Exchanger Tipe Shell and Tube di PT. Riau Andalan Pulp and Paper . Pekanbaru: STT Pekanbaru.

Gaya MLA

Purba, Maruli, Tuah. "Analisis Fouling Factor pada Heat Exchanger Tipe Shell and Tube di PT. Riau Andalan Pulp and Paper". Pekanbaru: STT Pekanbaru, 2013. Text.