APA Style

Nurmala, R. (2018). Preventive Maintenace Heat Exchanger Unit Tipe Shell and Tube . Purwakarta: Program Studi Teknik Mesin Politeknik Enjinering Indorama.

MLA Style

Nurmala, Risma. "Preventive Maintenace Heat Exchanger Unit Tipe Shell and Tube". Purwakarta: Program Studi Teknik Mesin Politeknik Enjinering Indorama, 2018. PKL Manufaktur.