Viorst, Milton, author
Bantam Book, 1965
Buku Teks
Robenso, James Harvey
Ginn , 1931
Buku Teks
Ferguson, Wallace K., author
Houghton Mifflin, 1962
Buku Teks
Bottici, Chiara, author
Cambridge University Press, 2013
Buku Teks
Childe, V. Gordon, author
Alfred A. Knopf, 1958
Buku Teks