Gaya APA

Liu, X. et al (2008). Calcium Ethoxide as a Solid Base Catalyst for the Transesterification of Soybean Oil to Biodiesel . Washington, DC: American Chemical Society.

Gaya MLA

Liu, Xuejun. et al. "Calcium Ethoxide as a Solid Base Catalyst for the Transesterification of Soybean Oil to Biodiesel". Washington, DC: American Chemical Society, 2008. e-journal.