Mitchell, Thomas G.
Longmans, Green, 1892
Buku Teks
Agoes Ariesmunandar ; Davison, Julian ; Bromer, Bea ; Durmacay, Jacques
Archipelago Press, 1998
Buku Referensi
Hollins, Carole
Blackwell Munksgaard, 2006
Buku Teks
Phiona Stanley and Greg Vass, editors
Routledge, 2018
Buku Teks
Boyd, William E.
Prentice-Hall, 1955
Buku Teks