Cita APA (7th ed.)

Rani, N. H. A., Ripin, A., & Diperbaharui, F. K. P. d. T. (2009). Extraction of base oil from waste lubricants oil using single polar solvent.

Cita Chicago (17th ed.)

Rani, Noor Hidayu Abdul, Adnan Ripin, i Fakulti Kejuruteraan Petroleum dan Tenaga Diperbaharui. Extraction of Base Oil from Waste Lubricants Oil Using Single Polar Solvent. 2009.

Cita MLA (9th ed.)

Rani, Noor Hidayu Abdul, et al. Extraction of Base Oil from Waste Lubricants Oil Using Single Polar Solvent. 2009.