Josselin de Jong, J.P.B. de, author
Foris Publications, 1987
Buku Teks
Beak, Sera, author
Jossey-Bass, 2006
Buku Teks
Meister, Jeanne C
McGraw-Hill, Inc, 1998
Buku Teks
Mountford, James, Sir, author
Oxford Unniversity Press, 1966
Buku Teks
Pertjetakan Negara, 1955
Buku Teks