American Academy of Pediatrics,, 1991.
Buku Teks SO
edited by Stephen C. Aronoff
Mosby, 1991
Buku Teks SO
Mosby, 1985
Buku Teks SO
Emond, R.T.D.
Wolfe medical publication, 1987
Buku Referensi
edited by Davidson H. Hamer, Jeffrey K Griffiths
Academic Press, 2010
Buku Teks