Ross, Janet, author
Harper & Row , 1965
Buku Teks
Robinson, Lois
Harper & Row , 1967
Buku Teks
Fries, Charles Carpenter, author
University of Michigan Press, 1951
Buku Teks
Garner, Bryan A., author
The University of Chicago Press, 2001
Buku Teks
Scholastic, 1987
Buku Teks