Skoog, Douglas; West, Douglas M; Holler, F James (1996). "5: Gravimetric Analysis". Fundamentals of Analytical Chemistry (7th ed.). Fort Worth: Saunders College Publishing Harcourt Brace. pp. 71–96. LCCN95-067683.
Skoog, Douglas; West, Douglas M; Holler, F James (1996). "5: Gravimetric Analysis". Fundamentals of Analytical Chemistry (7th ed.). Fort Worth: Saunders College Publishing Harcourt Brace. pp. 71–96. LCCN95-067683.