|In: Ferri's Differential Diagnosis: A Practical Guide to the Differential Diagnosis of Symptoms, Signs and Clinical Disorders|
|webmd - What Do Different Poop Colors Mean? medicalnewstoday - Why does poop turn green and other colors? What the color of your urine means||Evaluation of the urologic patient: History, physical examination, and urinalysis|
In: Sleisenger and Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management.