Haddix, Kathryn A.
Glencoe, McGraw-Hill, 2002
Buku Teks
McGraw-Hill Co., 2002
Multimedia
Olsen, June L.
Prentice-Hall, 1995
Buku Teks
Olsen, June L.
Printice-Hall Health, 2000
Buku Teks
June L. Olsen ... [et al.]
Pearson Prenticel Hall, 2008
Buku Teks