Reyes Hernández, Reynier, et al. “Cost Identification and Analysis for the Extraction of Plasma in the Blood Bank of Cienfuegos Cuba”. Scientific Journal Visión De Futuro, vol. 17, no. 1, Dec. 2012, https://visiondefuturo.fce.unam.edu.ar/index.php/visiondefuturo/article/view/555.