Escoto, A. D. (1983). Gel permeation chromatography of lignite hydroliquefaction products-an exploratory study. Philippine Engineering Journal.
Cita Chicago (17th ed.)Escoto, Angela D. "Gel Permeation Chromatography of Lignite Hydroliquefaction Products-an Exploratory Study." Philippine Engineering Journal 1983.
Cita MLA (9th ed.)Escoto, Angela D. "Gel Permeation Chromatography of Lignite Hydroliquefaction Products-an Exploratory Study." Philippine Engineering Journal, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.