Cowles, Roy T., author
South China Peniel Press, 1949
Buku Referensi
Chalmers, John
London Missionary Society's Press, 1859
Buku Referensi
Merriam Webster, 1995
Buku Referensi
Helicon, 1993
Buku Referensi
edited by Christine Brooker
Mosby , 2004
Buku Referensi