Johnson, Simon
Keep your kids safe on the internet
McGraw-Hill, 2004
 Buku Teks SO
Payne, Wayne A.
Understanding your health
McGraw-Hill, 2002
 Buku Teks SO
Nomi, Toshikata
You are your blood type
Mizan Media utama, 2017
 Buku Teks SO
Shaffer, Rick
Your guide to the sky
Lowell House, 1999
 Buku Referensi
Katz, William A., 1924-
Your library : a reference guide
Holt, Rinehart and Winston, 1979
 Buku Teks SO