Singh, Surya Pratap, Kailash Dhaker, Abhisek Namdev, Mahaveer Prasad Khinchi, and Surbhi Bhatnagar. 2016. “A Review on Process Validation”. PharmaTutor 4 (12), 9-19. http://www.pharmatutorjournal.com/index.php/pt/article/view/393.