J. B. Antezana-Muñoz and J. A. Barrios Flores, “Chapter 1. Composition and functions of the internal environment. Renal physiology”, in Electrolyte and Internal Environment Imbalances in Emergencies (Spanish Edition), AG Editor, 2025, pp. 11–18. doi: 10.62486/978-9915-9680-0-1.ch01.