Sage, Anne, author
Chronicle Books, 2015
Buku Referensi
Ray, James Arthur, author
Gramedia Pustaka Utama, 2009
Buku Teks
Gawain, Shakti, author
Whatever Publisher, 2002
Buku Teks
Buku Teks
editor, Rosalie Targonski
United States Information Agency, Office of Academic Programs, [date of publication not identified]
Buku Teks