Cita APA (7th ed.)

Trio, P. Z., Perlas, L. A., & Ulanday, J. R. C. (2011). Method validation of plasma or serum retinol analysis using high performane liquid chromatography UV/VIS detection. Transactions of the National Academy of Science and Technology.

Cita Chicago (17th ed.)

Trio, Phoebe Z., Leah A. Perlas, i Joselita Rosario C. Ulanday. "Method Validation of Plasma or Serum Retinol Analysis Using High Performane Liquid Chromatography UV/VIS Detection." Transactions of the National Academy of Science and Technology 2011.

Cita MLA (9th ed.)

Trio, Phoebe Z., et al. "Method Validation of Plasma or Serum Retinol Analysis Using High Performane Liquid Chromatography UV/VIS Detection." Transactions of the National Academy of Science and Technology, 2011.