Harkreader, Helen
Saunders, 2007
Buku Teks
Peterson, Veronica Ronnie
Mosby , 2005
Buku Teks
Daniels, Rick
Delmar Cengage Learning, 2010
Buku Teks
Potter, Patricia A.
Mosby Elsevier, 2009
Buku Teks
by Nancy L. Diekelmann [and others]
McGraw-Hill, 1980
Buku Teks