Foer, Joshua
Penguin Books, 2011
Buku Teks
Gribbin, John
Yale University Press, 1999
Buku Referensi
Yekyong Publications, 1987
Buku Teks
Chamberlin, Marry W.
American Library Association, 1959
Buku Referensi
Walsh, Linda
John Wiley & Sons, 2017
Buku Teks