Willerson, James T. Cohn, Jay N. creator text New York Churchill Livingstone 2000 2nd ed. monographic xxiii, 2344 p. : ill.(col.); Cardiology WG 100 WIL 2000 0443070008 https://books.google.com.pk/books?id=CVdGAAAAQBAJ&printsec=frontcover&dq=0443070008&hl=en&sa=X&ved=2ahUKEwjC29jgisf0AhVXAGMBHfjlAFoQ6AF6BAgHEAI#v=onepage&q&f=false https://books.google.com.pk/books?id=CVdGAAAAQBAJ&printsec=frontcover&dq=0443070008&hl=en&sa=X&ved=2ahUKEwjC29jgisf0AhVXAGMBHfjlAFoQ6AF6BAgHEAI#v=onepage&q&f=false 20260128043024.0